Release notes¶
Scrapy 2.5.1 (2021-10-05)¶
Security bug fix:
If you use
HttpAuthMiddleware
(i.e. thehttp_user
andhttp_pass
spider attributes) for HTTP authentication, any request exposes your credentials to the request target.To prevent unintended exposure of authentication credentials to unintended domains, you must now additionally set a new, additional spider attribute,
http_auth_domain
, and point it to the specific domain to which the authentication credentials must be sent.If the
http_auth_domain
spider attribute is not set, the domain of the first request will be considered the HTTP authentication target, and authentication credentials will only be sent in requests targeting that domain.If you need to send the same HTTP authentication credentials to multiple domains, you can use
w3lib.http.basic_auth_header()
instead to set the value of theAuthorization
header of your requests.If you really want your spider to send the same HTTP authentication credentials to any domain, set the
http_auth_domain
spider attribute toNone
.Finally, if you are a user of scrapy-splash, know that this version of Scrapy breaks compatibility with scrapy-splash 0.7.2 and earlier. You will need to upgrade scrapy-splash to a greater version for it to continue to work.
Scrapy 2.5.0 (2021-04-06)¶
Highlights:
Official Python 3.9 support
Experimental HTTP/2 support
New
get_retry_request()
function to retry requests from spider callbacksNew
headers_received
signal that allows stopping downloads earlyNew
Response.protocol
attribute
Deprecation removals¶
Removed all code that was deprecated in 1.7.0 and had not already been removed in 2.4.0. (issue 4901)
Removed support for the
SCRAPY_PICKLED_SETTINGS_TO_OVERRIDE
environment variable, deprecated in 1.8.0. (issue 4912)
Deprecations¶
The
scrapy.utils.py36
module is now deprecated in favor ofscrapy.utils.asyncgen
. (issue 4900)
New features¶
Experimental HTTP/2 support through a new download handler that can be assigned to the
https
protocol in theDOWNLOAD_HANDLERS
setting. (issue 1854, issue 4769, issue 5058, issue 5059, issue 5066)The new
scrapy.downloadermiddlewares.retry.get_retry_request()
function may be used from spider callbacks or middlewares to handle the retrying of a request beyond the scenarios thatRetryMiddleware
supports. (issue 3590, issue 3685, issue 4902)The new
headers_received
signal gives early access to response headers and allows stopping downloads. (issue 1772, issue 4897)The new
Response.protocol
attribute gives access to the string that identifies the protocol used to download a response. (issue 4878)Stats now include the following entries that indicate the number of successes and failures in storing feeds:
feedexport/success_count/<storage type> feedexport/failed_count/<storage type>
Where
<storage type>
is the feed storage backend class name, such asFileFeedStorage
orFTPFeedStorage
.The
UrlLengthMiddleware
spider middleware now logs ignored URLs withINFO
logging level instead ofDEBUG
, and it now includes the following entry into stats to keep track of the number of ignored URLs:urllength/request_ignored_count
The
HttpCompressionMiddleware
downloader middleware now logs the number of decompressed responses and the total count of resulting bytes:httpcompression/response_bytes httpcompression/response_count
Bug fixes¶
Fixed installation on PyPy installing PyDispatcher in addition to PyPyDispatcher, which could prevent Scrapy from working depending on which package got imported. (issue 4710, issue 4814)
When inspecting a callback to check if it is a generator that also returns a value, an exception is no longer raised if the callback has a docstring with lower indentation than the following code. (issue 4477, issue 4935)
The Content-Length header is no longer omitted from responses when using the default, HTTP/1.1 download handler (see
DOWNLOAD_HANDLERS
). (issue 5009, issue 5034, issue 5045, issue 5057, issue 5062)Setting the
handle_httpstatus_all
request meta key toFalse
now has the same effect as not setting it at all, instead of having the same effect as setting it toTrue
. (issue 3851, issue 4694)
Documentation¶
Added instructions to install Scrapy in Windows using pip. (issue 4715, issue 4736)
Logging documentation now includes additional ways to filter logs. (issue 4216, issue 4257, issue 4965)
Covered how to deal with long lists of allowed domains in the FAQ. (issue 2263, issue 3667)
Covered scrapy-bench in Benchmarking. (issue 4996, issue 5016)
Clarified that one extension instance is created per crawler. (issue 5014)
Fixed some errors in examples. (issue 4829, issue 4830, issue 4907, issue 4909, issue 5008)
Fixed some external links, typos, and so on. (issue 4892, issue 4899, issue 4936, issue 4942, issue 5005, issue 5063)
The list of Request.meta keys is now sorted alphabetically. (issue 5061, issue 5065)
Updated references to Scrapinghub, which is now called Zyte. (issue 4973, issue 5072)
Added a mention to contributors in the README. (issue 4956)
Reduced the top margin of lists. (issue 4974)
Quality Assurance¶
Made Python 3.9 support official (issue 4757, issue 4759)
Extended typing hints (issue 4895)
Fixed deprecated uses of the Twisted API. (issue 4940, issue 4950, issue 5073)
Made our tests run with the new pip resolver. (issue 4710, issue 4814)
Added tests to ensure that coroutine support is tested. (issue 4987)
Migrated from Travis CI to GitHub Actions. (issue 4924)
Fixed CI issues. (issue 4986, issue 5020, issue 5022, issue 5027, issue 5052, issue 5053)
Implemented code refactorings, style fixes and cleanups. (issue 4911, issue 4982, issue 5001, issue 5002, issue 5076)
Scrapy 2.4.1 (2020-11-17)¶
Fixed feed exports overwrite support (issue 4845, issue 4857, issue 4859)
Fixed the AsyncIO event loop handling, which could make code hang (issue 4855, issue 4872)
Fixed the IPv6-capable DNS resolver
CachingHostnameResolver
for download handlers that callreactor.resolve
(issue 4802, issue 4803)Fixed the output of the
genspider
command showing placeholders instead of the import path of the generated spider module (issue 4874)Migrated Windows CI from Azure Pipelines to GitHub Actions (issue 4869, issue 4876)
Scrapy 2.4.0 (2020-10-11)¶
Highlights:
Python 3.5 support has been dropped.
The
file_path
method of media pipelines can now access the source item.This allows you to set a download file path based on item data.
The new
item_export_kwargs
key of theFEEDS
setting allows to define keyword parameters to pass to item exporter classesYou can now choose whether feed exports overwrite or append to the output file.
For example, when using the
crawl
orrunspider
commands, you can use the-O
option instead of-o
to overwrite the output file.Zstd-compressed responses are now supported if zstandard is installed.
In settings, where the import path of a class is required, it is now possible to pass a class object instead.
Modified requirements¶
Python 3.6 or greater is now required; support for Python 3.5 has been dropped
As a result:
When using PyPy, PyPy 7.2.0 or greater is now required
For Amazon S3 storage support in feed exports or media pipelines, botocore 1.4.87 or greater is now required
To use the images pipeline, Pillow 4.0.0 or greater is now required
(issue 4718, issue 4732, issue 4733, issue 4742, issue 4743, issue 4764)
Backward-incompatible changes¶
CookiesMiddleware
once again discards cookies defined inRequest.headers
.We decided to revert this bug fix, introduced in Scrapy 2.2.0, because it was reported that the current implementation could break existing code.
If you need to set cookies for a request, use the
Request.cookies
parameter.A future version of Scrapy will include a new, better implementation of the reverted bug fix.
Deprecation removals¶
scrapy.extensions.feedexport.S3FeedStorage
no longer reads the values ofaccess_key
andsecret_key
from the running project settings when they are not passed to its__init__
method; you must either pass those parameters to its__init__
method or useS3FeedStorage.from_crawler
(issue 4356, issue 4411, issue 4688)Rule.process_request
no longer admits callables which expect a singlerequest
parameter, rather than bothrequest
andresponse
(issue 4818)
Deprecations¶
In custom media pipelines, signatures that do not accept a keyword-only
item
parameter in any of the methods that now support this parameter are now deprecated (issue 4628, issue 4686)In custom feed storage backend classes,
__init__
method signatures that do not accept a keyword-onlyfeed_options
parameter are now deprecated (issue 547, issue 716, issue 4512)The
scrapy.utils.python.WeakKeyCache
class is now deprecated (issue 4684, issue 4701)The
scrapy.utils.boto.is_botocore()
function is now deprecated, usescrapy.utils.boto.is_botocore_available()
instead (issue 4734, issue 4776)
New features¶
The following methods of media pipelines now accept an
item
keyword-only parameter containing the source item:In
scrapy.pipelines.files.FilesPipeline
:file_downloaded()
media_downloaded()
media_to_download()
In
scrapy.pipelines.images.ImagesPipeline
:file_downloaded()
get_images()
image_downloaded()
media_downloaded()
media_to_download()
The new
item_export_kwargs
key of theFEEDS
setting allows to define keyword parameters to pass to item exporter classes (issue 4606, issue 4768)Feed exports gained overwrite support:
When using the
crawl
orrunspider
commands, you can use the-O
option instead of-o
to overwrite the output fileYou can use the
overwrite
key in theFEEDS
setting to configure whether to overwrite the output file (True
) or append to its content (False
)The
__init__
andfrom_crawler
methods of feed storage backend classes now receive a new keyword-only parameter,feed_options
, which is a dictionary of feed options
Zstd-compressed responses are now supported if zstandard is installed (issue 4831)
In settings, where the import path of a class is required, it is now possible to pass a class object instead (issue 3870, issue 3873).
This includes also settings where only part of its value is made of an import path, such as
DOWNLOADER_MIDDLEWARES
orDOWNLOAD_HANDLERS
.Downloader middlewares can now override
response.request
.If a downloader middleware returns a
Response
object fromprocess_response()
orprocess_exception()
with a customRequest
object assigned toresponse.request
:The response is handled by the callback of that custom
Request
object, instead of being handled by the callback of the originalRequest
objectThat custom
Request
object is now sent as therequest
argument to theresponse_received
signal, instead of the originalRequest
object
When using the FTP feed storage backend:
It is now possible to set the new
overwrite
feed option toFalse
to append to an existing file instead of overwriting itThe FTP password can now be omitted if it is not necessary
The
__init__
method ofCsvItemExporter
now supports anerrors
parameter to indicate how to handle encoding errors (issue 4755)When using asyncio, it is now possible to set a custom asyncio loop (issue 4306, issue 4414)
Serialized requests (see Jobs: pausing and resuming crawls) now support callbacks that are spider methods that delegate on other callable (issue 4756)
When a response is larger than
DOWNLOAD_MAXSIZE
, the logged message is now a warning, instead of an error (issue 3874, issue 3886, issue 4752)
Bug fixes¶
The
genspider
command no longer overwrites existing files unless the--force
option is used (issue 4561, issue 4616, issue 4623)Cookies with an empty value are no longer considered invalid cookies (issue 4772)
The
runspider
command now supports files with the.pyw
file extension (issue 4643, issue 4646)The
HttpProxyMiddleware
middleware now simply ignores unsupported proxy values (issue 3331, issue 4778)Checks for generator callbacks with a
return
statement no longer warn aboutreturn
statements in nested functions (issue 4720, issue 4721)The system file mode creation mask no longer affects the permissions of files generated using the
startproject
command (issue 4722)scrapy.utils.iterators.xmliter()
now supports namespaced node names (issue 861, issue 4746)Request
objects can now haveabout:
URLs, which can work when using a headless browser (issue 4835)
Documentation¶
The
FEED_URI_PARAMS
setting is now documented (issue 4671, issue 4724)Improved the documentation of link extractors with an usage example from a spider callback and reference documentation for the
Link
class (issue 4751, issue 4775)Clarified the impact of
CONCURRENT_REQUESTS
when using theCloseSpider
extension (issue 4836)Removed references to Python 2’s
unicode
type (issue 4547, issue 4703)We now have an official deprecation policy (issue 4705)
Our documentation policies now cover usage of Sphinx’s
versionadded
andversionchanged
directives, and we have removed usages referencing Scrapy 1.4.0 and earlier versions (issue 3971, issue 4310)Other documentation cleanups (issue 4090, issue 4782, issue 4800, issue 4801, issue 4809, issue 4816, issue 4825)
Quality assurance¶
Extended typing hints (issue 4243, issue 4691)
Added tests for the
check
command (issue 4663)Fixed test failures on Debian (issue 4726, issue 4727, issue 4735)
Improved Windows test coverage (issue 4723)
Switched to formatted string literals where possible (issue 4307, issue 4324, issue 4672)
Modernized
super()
usage (issue 4707)Other code and test cleanups (issue 1790, issue 3288, issue 4165, issue 4564, issue 4651, issue 4714, issue 4738, issue 4745, issue 4747, issue 4761, issue 4765, issue 4804, issue 4817, issue 4820, issue 4822, issue 4839)
Scrapy 2.3.0 (2020-08-04)¶
Highlights:
Feed exports now support Google Cloud Storage as a storage backend
The new
FEED_EXPORT_BATCH_ITEM_COUNT
setting allows to deliver output items in batches of up to the specified number of items.It also serves as a workaround for delayed file delivery, which causes Scrapy to only start item delivery after the crawl has finished when using certain storage backends (S3, FTP, and now GCS).
The base implementation of item loaders has been moved into a separate library, itemloaders, allowing usage from outside Scrapy and a separate release schedule
Deprecation removals¶
Removed the following classes and their parent modules from
scrapy.linkextractors
:htmlparser.HtmlParserLinkExtractor
regex.RegexLinkExtractor
sgml.BaseSgmlLinkExtractor
sgml.SgmlLinkExtractor
Use
LinkExtractor
instead (issue 4356, issue 4679)
Deprecations¶
The
scrapy.utils.python.retry_on_eintr
function is now deprecated (issue 4683)
New features¶
Feed exports support Google Cloud Storage (issue 685, issue 3608)
New
FEED_EXPORT_BATCH_ITEM_COUNT
setting for batch deliveries (issue 4250, issue 4434)The
parse
command now allows specifying an output file (issue 4317, issue 4377)Request.from_curl
andcurl_to_request_kwargs()
now also support--data-raw
(issue 4612)A
parse
callback may now be used in built-in spider subclasses, such asCrawlSpider
(issue 712, issue 732, issue 781, issue 4254 )
Bug fixes¶
Fixed the CSV exporting of dataclass items and attr.s items (issue 4667, issue 4668)
Request.from_curl
andcurl_to_request_kwargs()
now set the request method toPOST
when a request body is specified and no request method is specified (issue 4612)The processing of ANSI escape sequences in enabled in Windows 10.0.14393 and later, where it is required for colored output (issue 4393, issue 4403)
Documentation¶
Updated the OpenSSL cipher list format link in the documentation about the
DOWNLOADER_CLIENT_TLS_CIPHERS
setting (issue 4653)Simplified the code example in Working with dataclass items (issue 4652)
Quality assurance¶
The base implementation of item loaders has been moved into itemloaders (issue 4005, issue 4516)
Fixed a silenced error in some scheduler tests (issue 4644, issue 4645)
Renewed the localhost certificate used for SSL tests (issue 4650)
Removed cookie-handling code specific to Python 2 (issue 4682)
Stopped using Python 2 unicode literal syntax (issue 4704)
Stopped using a backlash for line continuation (issue 4673)
Removed unneeded entries from the MyPy exception list (issue 4690)
Automated tests now pass on Windows as part of our continuous integration system (issue 4458)
Automated tests now pass on the latest PyPy version for supported Python versions in our continuous integration system (issue 4504)
Scrapy 2.2.1 (2020-07-17)¶
The
startproject
command no longer makes unintended changes to the permissions of files in the destination folder, such as removing execution permissions (issue 4662, issue 4666)
Scrapy 2.2.0 (2020-06-24)¶
Highlights:
Python 3.5.2+ is required now
dataclass objects and attrs objects are now valid item types
New
TextResponse.json
methodNew
bytes_received
signal that allows canceling response downloadCookiesMiddleware
fixes
Backward-incompatible changes¶
Support for Python 3.5.0 and 3.5.1 has been dropped; Scrapy now refuses to run with a Python version lower than 3.5.2, which introduced
typing.Type
(issue 4615)
Deprecations¶
TextResponse.body_as_unicode
is now deprecated, useTextResponse.text
instead (issue 4546, issue 4555, issue 4579)scrapy.item.BaseItem
is now deprecated, usescrapy.item.Item
instead (issue 4534)
New features¶
dataclass objects and attrs objects are now valid item types, and a new itemadapter library makes it easy to write code that supports any item type (issue 2749, issue 2807, issue 3761, issue 3881, issue 4642)
A new
TextResponse.json
method allows to deserialize JSON responses (issue 2444, issue 4460, issue 4574)A new
bytes_received
signal allows monitoring response download progress and stopping downloads (issue 4205, issue 4559)The dictionaries in the result list of a media pipeline now include a new key,
status
, which indicates if the file was downloaded or, if the file was not downloaded, why it was not downloaded; seeFilesPipeline.get_media_requests
for more information (issue 2893, issue 4486)When using Google Cloud Storage for a media pipeline, a warning is now logged if the configured credentials do not grant the required permissions (issue 4346, issue 4508)
Link extractors are now serializable, as long as you do not use lambdas for parameters; for example, you can now pass link extractors in
Request.cb_kwargs
orRequest.meta
when persisting scheduled requests (issue 4554)Upgraded the pickle protocol that Scrapy uses from protocol 2 to protocol 4, improving serialization capabilities and performance (issue 4135, issue 4541)
scrapy.utils.misc.create_instance()
now raises aTypeError
exception if the resulting instance isNone
(issue 4528, issue 4532)
Bug fixes¶
CookiesMiddleware
no longer discards cookies defined inRequest.headers
(issue 1992, issue 2400)CookiesMiddleware
no longer re-encodes cookies defined asbytes
in thecookies
parameter of the__init__
method ofRequest
(issue 2400, issue 3575)When
FEEDS
defines multiple URIs,FEED_STORE_EMPTY
isFalse
and the crawl yields no items, Scrapy no longer stops feed exports after the first URI (issue 4621, issue 4626)Spider
callbacks defined using coroutine syntax no longer need to return an iterable, and may instead return aRequest
object, an item, orNone
(issue 4609)The
startproject
command now ensures that the generated project folders and files have the right permissions (issue 4604)Fix a
KeyError
exception being sometimes raised fromscrapy.utils.datatypes.LocalWeakReferencedCache
(issue 4597, issue 4599)When
FEEDS
defines multiple URIs, log messages about items being stored now contain information from the corresponding feed, instead of always containing information about only one of the feeds (issue 4619, issue 4629)
Documentation¶
Added a new section about accessing cb_kwargs from errbacks (issue 4598, issue 4634)
Covered chompjs in Parsing JavaScript code (issue 4556, issue 4562)
Removed from Coroutines the warning about the API being experimental (issue 4511, issue 4513)
Removed references to unsupported versions of Twisted (issue 4533)
Updated the description of the screenshot pipeline example, which now uses coroutine syntax instead of returning a
Deferred
(issue 4514, issue 4593)Removed a misleading import line from the
scrapy.utils.log.configure_logging()
code example (issue 4510, issue 4587)The display-on-hover behavior of internal documentation references now also covers links to commands,
Request.meta
keys, settings and signals (issue 4495, issue 4563)It is again possible to download the documentation for offline reading (issue 4578, issue 4585)
Removed backslashes preceding
*args
and**kwargs
in some function and method signatures (issue 4592, issue 4596)
Quality assurance¶
Adjusted the code base further to our style guidelines (issue 4237, issue 4525, issue 4538, issue 4539, issue 4540, issue 4542, issue 4543, issue 4544, issue 4545, issue 4557, issue 4558, issue 4566, issue 4568, issue 4572)
Removed remnants of Python 2 support (issue 4550, issue 4553, issue 4568)
Improved code sharing between the
crawl
andrunspider
commands (issue 4548, issue 4552)Replaced
chain(*iterable)
withchain.from_iterable(iterable)
(issue 4635)You may now run the
asyncio
tests with Tox on any Python version (issue 4521)Updated test requirements to reflect an incompatibility with pytest 5.4 and 5.4.1 (issue 4588)
Improved
SpiderLoader
test coverage for scenarios involving duplicate spider names (issue 4549, issue 4560)Configured Travis CI to also run the tests with Python 3.5.2 (issue 4518, issue 4615)
Added a Pylint job to Travis CI (issue 3727)
Added a Mypy job to Travis CI (issue 4637)
Made use of set literals in tests (issue 4573)
Cleaned up the Travis CI configuration (issue 4517, issue 4519, issue 4522, issue 4537)
Scrapy 2.1.0 (2020-04-24)¶
Highlights:
New
FEEDS
setting to export to multiple feedsNew
Response.ip_address
attribute
Backward-incompatible changes¶
AssertionError
exceptions triggered by assert statements have been replaced by new exception types, to support running Python in optimized mode (see-O
) without changing Scrapy’s behavior in any unexpected ways.If you catch an
AssertionError
exception from Scrapy, update your code to catch the corresponding new exception.
Deprecation removals¶
The
LOG_UNSERIALIZABLE_REQUESTS
setting is no longer supported, useSCHEDULER_DEBUG
instead (issue 4385)The
REDIRECT_MAX_METAREFRESH_DELAY
setting is no longer supported, useMETAREFRESH_MAXDELAY
instead (issue 4385)The
ChunkedTransferMiddleware
middleware has been removed, including the entirescrapy.downloadermiddlewares.chunked
module; chunked transfers work out of the box (issue 4431)The
spiders
property has been removed fromCrawler
, useCrawlerRunner.spider_loader
or instantiateSPIDER_LOADER_CLASS
with your settings instead (issue 4398)The
MultiValueDict
,MultiValueDictKeyError
, andSiteNode
classes have been removed fromscrapy.utils.datatypes
(issue 4400)
Deprecations¶
The
FEED_FORMAT
andFEED_URI
settings have been deprecated in favor of the newFEEDS
setting (issue 1336, issue 3858, issue 4507)
New features¶
A new setting,
FEEDS
, allows configuring multiple output feeds with different settings each (issue 1336, issue 3858, issue 4507)The
crawl
andrunspider
commands now support multiple-o
parameters (issue 1336, issue 3858, issue 4507)The
crawl
andrunspider
commands now support specifying an output format by appending:<format>
to the output file (issue 1336, issue 3858, issue 4507)The new
Response.ip_address
attribute gives access to the IP address that originated a response (issue 3903, issue 3940)A warning is now issued when a value in
allowed_domains
includes a port (issue 50, issue 3198, issue 4413)Zsh completion now excludes used option aliases from the completion list (issue 4438)
Bug fixes¶
Request serialization no longer breaks for callbacks that are spider attributes which are assigned a function with a different name (issue 4500)
None
values inallowed_domains
no longer cause aTypeError
exception (issue 4410)Zsh completion no longer allows options after arguments (issue 4438)
zope.interface 5.0.0 and later versions are now supported (issue 4447, issue 4448)
Spider.make_requests_from_url
, deprecated in Scrapy 1.4.0, now issues a warning when used (issue 4412)
Documentation¶
Improved the documentation about signals that allow their handlers to return a
Deferred
(issue 4295, issue 4390)Our PyPI entry now includes links for our documentation, our source code repository and our issue tracker (issue 4456)
Covered the curl2scrapy service in the documentation (issue 4206, issue 4455)
Removed references to the Guppy library, which only works in Python 2 (issue 4285, issue 4343)
Extended use of InterSphinx to link to Python 3 documentation (issue 4444, issue 4445)
Added support for Sphinx 3.0 and later (issue 4475, issue 4480, issue 4496, issue 4503)
Quality assurance¶
Removed warnings about using old, removed settings (issue 4404)
Removed a warning about importing
StringTransport
fromtwisted.test.proto_helpers
in Twisted 19.7.0 or newer (issue 4409)Removed outdated Debian package build files (issue 4384)
Removed
object
usage as a base class (issue 4430)Removed code that added support for old versions of Twisted that we no longer support (issue 4472)
Fixed code style issues (issue 4468, issue 4469, issue 4471, issue 4481)
Removed
twisted.internet.defer.returnValue()
calls (issue 4443, issue 4446, issue 4489)
Scrapy 2.0.1 (2020-03-18)¶
Response.follow_all
now supports an empty URL iterable as input (issue 4408, issue 4420)Removed top-level
reactor
imports to prevent errors about the wrong Twisted reactor being installed when setting a different Twisted reactor usingTWISTED_REACTOR
(issue 4401, issue 4406)Fixed tests (issue 4422)
Scrapy 2.0.0 (2020-03-03)¶
Highlights:
Python 2 support has been removed
Partial coroutine syntax support and experimental
asyncio
supportNew
Response.follow_all
methodFTP support for media pipelines
New
Response.certificate
attributeIPv6 support through
DNS_RESOLVER
Backward-incompatible changes¶
Python 2 support has been removed, following Python 2 end-of-life on January 1, 2020 (issue 4091, issue 4114, issue 4115, issue 4121, issue 4138, issue 4231, issue 4242, issue 4304, issue 4309, issue 4373)
Retry gaveups (see
RETRY_TIMES
) are now logged as errors instead of as debug information (issue 3171, issue 3566)File extensions that
LinkExtractor
ignores by default now also include7z
,7zip
,apk
,bz2
,cdr
,dmg
,ico
,iso
,tar
,tar.gz
,webm
, andxz
(issue 1837, issue 2067, issue 4066)The
METAREFRESH_IGNORE_TAGS
setting is now an empty list by default, following web browser behavior (issue 3844, issue 4311)The
HttpCompressionMiddleware
now includes spaces after commas in the value of theAccept-Encoding
header that it sets, following web browser behavior (issue 4293)The
__init__
method of custom download handlers (seeDOWNLOAD_HANDLERS
) or subclasses of the following downloader handlers no longer receives asettings
parameter:scrapy.core.downloader.handlers.datauri.DataURIDownloadHandler
scrapy.core.downloader.handlers.file.FileDownloadHandler
Use the
from_settings
orfrom_crawler
class methods to expose such a parameter to your custom download handlers.We have refactored the
scrapy.core.scheduler.Scheduler
class and related queue classes (seeSCHEDULER_PRIORITY_QUEUE
,SCHEDULER_DISK_QUEUE
andSCHEDULER_MEMORY_QUEUE
) to make it easier to implement custom scheduler queue classes. See Changes to scheduler queue classes below for details.Overridden settings are now logged in a different format. This is more in line with similar information logged at startup (issue 4199)
Deprecation removals¶
The Scrapy shell no longer provides a sel proxy object, use
response.selector
instead (issue 4347)LevelDB support has been removed (issue 4112)
The following functions have been removed from
scrapy.utils.python
:isbinarytext
,is_writable
,setattr_default
,stringify_dict
(issue 4362)
Deprecations¶
Using environment variables prefixed with
SCRAPY_
to override settings is deprecated (issue 4300, issue 4374, issue 4375)scrapy.linkextractors.FilteringLinkExtractor
is deprecated, usescrapy.linkextractors.LinkExtractor
instead (issue 4045)The
noconnect
query string argument of proxy URLs is deprecated and should be removed from proxy URLs (issue 4198)The
next
method ofscrapy.utils.python.MutableChain
is deprecated, use the globalnext()
function orMutableChain.__next__
instead (issue 4153)
New features¶
Added partial support for Python’s coroutine syntax and experimental support for
asyncio
andasyncio
-powered libraries (issue 4010, issue 4259, issue 4269, issue 4270, issue 4271, issue 4316, issue 4318)The new
Response.follow_all
method offers the same functionality asResponse.follow
but supports an iterable of URLs as input and returns an iterable of requests (issue 2582, issue 4057, issue 4286)Media pipelines now support FTP storage (issue 3928, issue 3961)
The new
Response.certificate
attribute exposes the SSL certificate of the server as atwisted.internet.ssl.Certificate
object for HTTPS responses (issue 2726, issue 4054)A new
DNS_RESOLVER
setting allows enabling IPv6 support (issue 1031, issue 4227)A new
SCRAPER_SLOT_MAX_ACTIVE_SIZE
setting allows configuring the existing soft limit that pauses request downloads when the total response data being processed is too high (issue 1410, issue 3551)A new
TWISTED_REACTOR
setting allows customizing thereactor
that Scrapy uses, allowing to enable asyncio support or deal with a common macOS issue (issue 2905, issue 4294)Scheduler disk and memory queues may now use the class methods
from_crawler
orfrom_settings
(issue 3884)The new
Response.cb_kwargs
attribute serves as a shortcut forResponse.request.cb_kwargs
(issue 4331)Response.follow
now supports aflags
parameter, for consistency withRequest
(issue 4277, issue 4279)Item loader processors can now be regular functions, they no longer need to be methods (issue 3899)
Rule
now accepts anerrback
parameter (issue 4000)Request
no longer requires acallback
parameter when anerrback
parameter is specified (issue 3586, issue 4008)LogFormatter
now supports some additional methods:download_error
for download errorsitem_error
for exceptions raised during item processing by item pipelinesspider_error
for exceptions raised from spider callbacks
The
FEED_URI
setting now supportspathlib.Path
values (issue 3731, issue 4074)A new
request_left_downloader
signal is sent when a request leaves the downloader (issue 4303)Scrapy logs a warning when it detects a request callback or errback that uses
yield
but also returns a value, since the returned value would be lost (issue 3484, issue 3869)Spider
objects now raise anAttributeError
exception if they do not have astart_urls
attribute nor reimplementstart_requests
, but have astart_url
attribute (issue 4133, issue 4170)BaseItemExporter
subclasses may now usesuper().__init__(**kwargs)
instead ofself._configure(kwargs)
in their__init__
method, passingdont_fail=True
to the parent__init__
method if needed, and accessingkwargs
atself._kwargs
after calling their parent__init__
method (issue 4193, issue 4370)A new
keep_fragments
parameter ofscrapy.utils.request.request_fingerprint()
allows to generate different fingerprints for requests with different fragments in their URL (issue 4104)Download handlers (see
DOWNLOAD_HANDLERS
) may now use thefrom_settings
andfrom_crawler
class methods that other Scrapy components already supported (issue 4126)scrapy.utils.python.MutableChain.__iter__
now returnsself
, allowing it to be used as a sequence (issue 4153)
Bug fixes¶
The
crawl
command now also exits with exit code 1 when an exception happens before the crawling starts (issue 4175, issue 4207)LinkExtractor.extract_links
no longer re-encodes the query string or URLs from non-UTF-8 responses in UTF-8 (issue 998, issue 1403, issue 1949, issue 4321)The first spider middleware (see
SPIDER_MIDDLEWARES
) now also processes exceptions raised from callbacks that are generators (issue 4260, issue 4272)Redirects to URLs starting with 3 slashes (
///
) are now supported (issue 4032, issue 4042)Request
no longer accepts strings asurl
simply because they have a colon (issue 2552, issue 4094)The correct encoding is now used for attach names in
MailSender
(issue 4229, issue 4239)RFPDupeFilter
, the defaultDUPEFILTER_CLASS
, no longer writes an extra\r
character on each line in Windows, which made the size of therequests.seen
file unnecessarily large on that platform (issue 4283)Z shell auto-completion now looks for
.html
files, not.http
files, and covers the-h
command-line switch (issue 4122, issue 4291)Adding items to a
scrapy.utils.datatypes.LocalCache
object without alimit
defined no longer raises aTypeError
exception (issue 4123)Fixed a typo in the message of the
ValueError
exception raised whenscrapy.utils.misc.create_instance()
gets bothsettings
andcrawler
set toNone
(issue 4128)
Documentation¶
API documentation now links to an online, syntax-highlighted view of the corresponding source code (issue 4148)
Links to unexisting documentation pages now allow access to the sidebar (issue 4152, issue 4169)
Cross-references within our documentation now display a tooltip when hovered (issue 4173, issue 4183)
Improved the documentation about
LinkExtractor.extract_links
and simplified Link Extractors (issue 4045)Clarified how
ItemLoader.item
works (issue 3574, issue 4099)Clarified that
logging.basicConfig()
should not be used when also usingCrawlerProcess
(issue 2149, issue 2352, issue 3146, issue 3960)Clarified the requirements for
Request
objects when using persistence (issue 4124, issue 4139)Clarified how to install a custom image pipeline (issue 4034, issue 4252)
Fixed the signatures of the
file_path
method in media pipeline examples (issue 4290)Covered a backward-incompatible change in Scrapy 1.7.0 affecting custom
scrapy.core.scheduler.Scheduler
subclasses (issue 4274)Improved the
README.rst
andCODE_OF_CONDUCT.md
files (issue 4059)Documentation examples are now checked as part of our test suite and we have fixed some of the issues detected (issue 4142, issue 4146, issue 4171, issue 4184, issue 4190)
Fixed logic issues, broken links and typos (issue 4247, issue 4258, issue 4282, issue 4288, issue 4305, issue 4308, issue 4323, issue 4338, issue 4359, issue 4361)
Improved consistency when referring to the
__init__
method of an object (issue 4086, issue 4088)Fixed an inconsistency between code and output in Scrapy at a glance (issue 4213)
Extended
intersphinx
usage (issue 4147, issue 4172, issue 4185, issue 4194, issue 4197)We now use a recent version of Python to build the documentation (issue 4140, issue 4249)
Cleaned up documentation (issue 4143, issue 4275)
Quality assurance¶
Re-enabled proxy
CONNECT
tests (issue 2545, issue 4114)Added Bandit security checks to our test suite (issue 4162, issue 4181)
Added Flake8 style checks to our test suite and applied many of the corresponding changes (issue 3944, issue 3945, issue 4137, issue 4157, issue 4167, issue 4174, issue 4186, issue 4195, issue 4238, issue 4246, issue 4355, issue 4360, issue 4365)
Improved test coverage (issue 4097, issue 4218, issue 4236)
Started reporting slowest tests, and improved the performance of some of them (issue 4163, issue 4164)
Fixed broken tests and refactored some tests (issue 4014, issue 4095, issue 4244, issue 4268, issue 4372)
Modified the tox configuration to allow running tests with any Python version, run Bandit and Flake8 tests by default, and enforce a minimum tox version programmatically (issue 4179)
Cleaned up code (issue 3937, issue 4208, issue 4209, issue 4210, issue 4212, issue 4369, issue 4376, issue 4378)
Changes to scheduler queue classes¶
The following changes may impact any custom queue classes of all types:
The
push
method no longer receives a second positional parameter containingrequest.priority * -1
. If you need that value, get it from the first positional parameter,request
, instead, or use the newpriority()
method inscrapy.core.scheduler.ScrapyPriorityQueue
subclasses.
The following changes may impact custom priority queue classes:
In the
__init__
method or thefrom_crawler
orfrom_settings
class methods:The parameter that used to contain a factory function,
qfactory
, is now passed as a keyword parameter nameddownstream_queue_cls
.A new keyword parameter has been added:
key
. It is a string that is always an empty string for memory queues and indicates theJOB_DIR
value for disk queues.The parameter for disk queues that contains data from the previous crawl,
startprios
orslot_startprios
, is now passed as a keyword parameter namedstartprios
.The
serialize
parameter is no longer passed. The disk queue class must take care of request serialization on its own before writing to disk, using therequest_to_dict()
andrequest_from_dict()
functions from thescrapy.utils.reqser
module.
The following changes may impact custom disk and memory queue classes:
The signature of the
__init__
method is now__init__(self, crawler, key)
.
The following changes affect specifically the
ScrapyPriorityQueue
and
DownloaderAwarePriorityQueue
classes from
scrapy.core.scheduler
and may affect subclasses:
In the
__init__
method, most of the changes described above apply.__init__
may still receive all parameters as positional parameters, however:downstream_queue_cls
, which replacedqfactory
, must be instantiated differently.qfactory
was instantiated with a priority value (integer).Instances of
downstream_queue_cls
should be created using the newScrapyPriorityQueue.qfactory
orDownloaderAwarePriorityQueue.pqfactory
methods.The new
key
parameter displaced thestartprios
parameter 1 position to the right.
The following class attributes have been added:
crawler
downstream_queue_cls
(details above)key
(details above)
The
serialize
attribute has been removed (details above)
The following changes affect specifically the
ScrapyPriorityQueue
class and may affect
subclasses:
A new
priority()
method has been added which, given a request, returnsrequest.priority * -1
.It is used in
push()
to make up for the removal of itspriority
parameter.The
spider
attribute has been removed. Usecrawler.spider
instead.
The following changes affect specifically the
DownloaderAwarePriorityQueue
class and may
affect subclasses:
A new
pqueues
attribute offers a mapping of downloader slot names to the corresponding instances ofdownstream_queue_cls
.
Scrapy 1.8.0 (2019-10-28)¶
Highlights:
Dropped Python 3.4 support and updated minimum requirements; made Python 3.8 support official
New
Request.from_curl
class methodNew
ROBOTSTXT_PARSER
andROBOTSTXT_USER_AGENT
settingsNew
DOWNLOADER_CLIENT_TLS_CIPHERS
andDOWNLOADER_CLIENT_TLS_VERBOSE_LOGGING
settings
Backward-incompatible changes¶
Python 3.4 is no longer supported, and some of the minimum requirements of Scrapy have also changed:
cssselect 0.9.1
cryptography 2.0
lxml 3.5.0
pyOpenSSL 16.2.0
queuelib 1.4.2
service_identity 16.0.0
six 1.10.0
Twisted 17.9.0 (16.0.0 with Python 2)
zope.interface 4.1.3
JSONRequest
is now calledJsonRequest
for consistency with similar classes (issue 3929, issue 3982)If you are using a custom context factory (
DOWNLOADER_CLIENTCONTEXTFACTORY
), its__init__
method must accept two new parameters:tls_verbose_logging
andtls_ciphers
(issue 2111, issue 3392, issue 3442, issue 3450)ItemLoader
now turns the values of its input item into lists:>>> item = MyItem() >>> item['field'] = 'value1' >>> loader = ItemLoader(item=item) >>> item['field'] ['value1']
This is needed to allow adding values to existing fields (
loader.add_value('field', 'value2')
).(issue 3804, issue 3819, issue 3897, issue 3976, issue 3998, issue 4036)
See also Deprecation removals below.
New features¶
A new
Request.from_curl
class method allows creating a request from a cURL command (issue 2985, issue 3862)A new
ROBOTSTXT_PARSER
setting allows choosing which robots.txt parser to use. It includes built-in support for RobotFileParser, Protego (default), Reppy, and Robotexclusionrulesparser, and allows you to implement support for additional parsers (issue 754, issue 2669, issue 3796, issue 3935, issue 3969, issue 4006)A new
ROBOTSTXT_USER_AGENT
setting allows defining a separate user agent string to use for robots.txt parsing (issue 3931, issue 3966)Rule
no longer requires aLinkExtractor
parameter (issue 781, issue 4016)Use the new
DOWNLOADER_CLIENT_TLS_CIPHERS
setting to customize the TLS/SSL ciphers used by the default HTTP/1.1 downloader (issue 3392, issue 3442)Set the new
DOWNLOADER_CLIENT_TLS_VERBOSE_LOGGING
setting toTrue
to enable debug-level messages about TLS connection parameters after establishing HTTPS connections (issue 2111, issue 3450)Callbacks that receive keyword arguments (see
Request.cb_kwargs
) can now be tested using the new@cb_kwargs
spider contract (issue 3985, issue 3988)When a
@scrapes
spider contract fails, all missing fields are now reported (issue 766, issue 3939)Custom log formats can now drop messages by having the corresponding methods of the configured
LOG_FORMATTER
returnNone
(issue 3984, issue 3987)A much improved completion definition is now available for Zsh (issue 4069)
Bug fixes¶
ItemLoader.load_item()
no longer makes later calls toItemLoader.get_output_value()
orItemLoader.load_item()
return empty data (issue 3804, issue 3819, issue 3897, issue 3976, issue 3998, issue 4036)Fixed
DummyStatsCollector
raising aTypeError
exception (issue 4007, issue 4052)FilesPipeline.file_path
andImagesPipeline.file_path
no longer choose file extensions that are not registered with IANA (issue 1287, issue 3953, issue 3954)When using botocore to persist files in S3, all botocore-supported headers are properly mapped now (issue 3904, issue 3905)
FTP passwords in
FEED_URI
containing percent-escaped characters are now properly decoded (issue 3941)A memory-handling and error-handling issue in
scrapy.utils.ssl.get_temp_key_info()
has been fixed (issue 3920)
Documentation¶
The documentation now covers how to define and configure a custom log format (issue 3616, issue 3660)
API documentation added for
MarshalItemExporter
andPythonItemExporter
(issue 3973)API documentation added for
BaseItem
andItemMeta
(issue 3999)Minor documentation fixes (issue 2998, issue 3398, issue 3597, issue 3894, issue 3934, issue 3978, issue 3993, issue 4022, issue 4028, issue 4033, issue 4046, issue 4050, issue 4055, issue 4056, issue 4061, issue 4072, issue 4071, issue 4079, issue 4081, issue 4089, issue 4093)
Deprecation removals¶
scrapy.xlib
has been removed (issue 4015)
Deprecations¶
The LevelDB storage backend (
scrapy.extensions.httpcache.LeveldbCacheStorage
) ofHttpCacheMiddleware
is deprecated (issue 4085, issue 4092)Use of the undocumented
SCRAPY_PICKLED_SETTINGS_TO_OVERRIDE
environment variable is deprecated (issue 3910)scrapy.item.DictItem
is deprecated, useItem
instead (issue 3999)
Other changes¶
Minimum versions of optional Scrapy requirements that are covered by continuous integration tests have been updated:
Lower versions of these optional requirements may work, but it is not guaranteed (issue 3892)
GitHub templates for bug reports and feature requests (issue 3126, issue 3471, issue 3749, issue 3754)
Continuous integration fixes (issue 3923)
Code cleanup (issue 3391, issue 3907, issue 3946, issue 3950, issue 4023, issue 4031)
Scrapy 1.7.4 (2019-10-21)¶
Revert the fix for issue 3804 (issue 3819), which has a few undesired side effects (issue 3897, issue 3976).
As a result, when an item loader is initialized with an item,
ItemLoader.load_item()
once again
makes later calls to ItemLoader.get_output_value()
or ItemLoader.load_item()
return empty data.
Scrapy 1.7.3 (2019-08-01)¶
Enforce lxml 4.3.5 or lower for Python 3.4 (issue 3912, issue 3918).
Scrapy 1.7.2 (2019-07-23)¶
Fix Python 2 support (issue 3889, issue 3893, issue 3896).
Scrapy 1.7.1 (2019-07-18)¶
Re-packaging of Scrapy 1.7.0, which was missing some changes in PyPI.
Scrapy 1.7.0 (2019-07-18)¶
Note
Make sure you install Scrapy 1.7.1. The Scrapy 1.7.0 package in PyPI is the result of an erroneous commit tagging and does not include all the changes described below.
Highlights:
Improvements for crawls targeting multiple domains
A cleaner way to pass arguments to callbacks
A new class for JSON requests
Improvements for rule-based spiders
New features for feed exports
Backward-incompatible changes¶
429
is now part of theRETRY_HTTP_CODES
setting by defaultThis change is backward incompatible. If you don’t want to retry
429
, you must overrideRETRY_HTTP_CODES
accordingly.Crawler
,CrawlerRunner.crawl
andCrawlerRunner.create_crawler
no longer accept aSpider
subclass instance, they only accept aSpider
subclass now.Spider
subclass instances were never meant to work, and they were not working as one would expect: instead of using the passedSpider
subclass instance, theirfrom_crawler
method was called to generate a new instance.Non-default values for the
SCHEDULER_PRIORITY_QUEUE
setting may stop working. Scheduler priority queue classes now need to handleRequest
objects instead of arbitrary Python data structures.An additional
crawler
parameter has been added to the__init__
method of theScheduler
class. Custom scheduler subclasses which don’t accept arbitrary parameters in their__init__
method might break because of this change.For more information, see
SCHEDULER
.
See also Deprecation removals below.
New features¶
A new scheduler priority queue,
scrapy.pqueues.DownloaderAwarePriorityQueue
, may be enabled for a significant scheduling improvement on crawls targetting multiple web domains, at the cost of noCONCURRENT_REQUESTS_PER_IP
support (issue 3520)A new
Request.cb_kwargs
attribute provides a cleaner way to pass keyword arguments to callback methods (issue 1138, issue 3563)A new
JSONRequest
class offers a more convenient way to build JSON requests (issue 3504, issue 3505)A
process_request
callback passed to theRule
__init__
method now receives theResponse
object that originated the request as its second argument (issue 3682)A new
restrict_text
parameter for theLinkExtractor
__init__
method allows filtering links by linking text (issue 3622, issue 3635)A new
FEED_STORAGE_S3_ACL
setting allows defining a custom ACL for feeds exported to Amazon S3 (issue 3607)A new
FEED_STORAGE_FTP_ACTIVE
setting allows using FTP’s active connection mode for feeds exported to FTP servers (issue 3829)A new
METAREFRESH_IGNORE_TAGS
setting allows overriding which HTML tags are ignored when searching a response for HTML meta tags that trigger a redirect (issue 1422, issue 3768)A new
redirect_reasons
request meta key exposes the reason (status code, meta refresh) behind every followed redirect (issue 3581, issue 3687)The
SCRAPY_CHECK
variable is now set to thetrue
string during runs of thecheck
command, which allows detecting contract check runs from code (issue 3704, issue 3739)A new
Item.deepcopy()
method makes it easier to deep-copy items (issue 1493, issue 3671)CoreStats
also logselapsed_time_seconds
now (issue 3638)Exceptions from
ItemLoader
input and output processors are now more verbose (issue 3836, issue 3840)Crawler
,CrawlerRunner.crawl
andCrawlerRunner.create_crawler
now fail gracefully if they receive aSpider
subclass instance instead of the subclass itself (issue 2283, issue 3610, issue 3872)
Bug fixes¶
process_spider_exception()
is now also invoked for generators (issue 220, issue 2061)System exceptions like KeyboardInterrupt are no longer caught (issue 3726)
ItemLoader.load_item()
no longer makes later calls toItemLoader.get_output_value()
orItemLoader.load_item()
return empty data (issue 3804, issue 3819)The images pipeline (
ImagesPipeline
) no longer ignores these Amazon S3 settings:AWS_ENDPOINT_URL
,AWS_REGION_NAME
,AWS_USE_SSL
,AWS_VERIFY
(issue 3625)Fixed a memory leak in
scrapy.pipelines.media.MediaPipeline
affecting, for example, non-200 responses and exceptions from custom middlewares (issue 3813)Requests with private callbacks are now correctly unserialized from disk (issue 3790)
FormRequest.from_response()
now handles invalid methods like major web browsers (issue 3777, issue 3794)
Documentation¶
A new topic, Selecting dynamically-loaded content, covers recommended approaches to read dynamically-loaded data (issue 3703)
Broad Crawls now features information about memory usage (issue 1264, issue 3866)
The documentation of
Rule
now covers how to access the text of a link when usingCrawlSpider
(issue 3711, issue 3712)A new section, Writing your own storage backend, covers writing a custom cache storage backend for
HttpCacheMiddleware
(issue 3683, issue 3692)A new FAQ entry, How to split an item into multiple items in an item pipeline?, explains what to do when you want to split an item into multiple items from an item pipeline (issue 2240, issue 3672)
Updated the FAQ entry about crawl order to explain why the first few requests rarely follow the desired order (issue 1739, issue 3621)
The
LOGSTATS_INTERVAL
setting (issue 3730), theFilesPipeline.file_path
andImagesPipeline.file_path
methods (issue 2253, issue 3609) and theCrawler.stop()
method (issue 3842) are now documentedSome parts of the documentation that were confusing or misleading are now clearer (issue 1347, issue 1789, issue 2289, issue 3069, issue 3615, issue 3626, issue 3668, issue 3670, issue 3673, issue 3728, issue 3762, issue 3861, issue 3882)
Minor documentation fixes (issue 3648, issue 3649, issue 3662, issue 3674, issue 3676, issue 3694, issue 3724, issue 3764, issue 3767, issue 3791, issue 3797, issue 3806, issue 3812)
Deprecation removals¶
The following deprecated APIs have been removed (issue 3578):
scrapy.conf
(useCrawler.settings
)From
scrapy.core.downloader.handlers
:http.HttpDownloadHandler
(usehttp10.HTTP10DownloadHandler
)
scrapy.loader.ItemLoader._get_values
(use_get_xpathvalues
)scrapy.loader.XPathItemLoader
(useItemLoader
)scrapy.log
(see Logging)From
scrapy.pipelines
:files.FilesPipeline.file_key
(usefile_path
)images.ImagesPipeline.file_key
(usefile_path
)images.ImagesPipeline.image_key
(usefile_path
)images.ImagesPipeline.thumb_key
(usethumb_path
)
From both
scrapy.selector
andscrapy.selector.lxmlsel
:From
scrapy.selector.csstranslator
:ScrapyGenericTranslator
(use parsel.csstranslator.GenericTranslator)ScrapyHTMLTranslator
(use parsel.csstranslator.HTMLTranslator)ScrapyXPathExpr
(use parsel.csstranslator.XPathExpr)
From
Selector
:_root
(both the__init__
method argument and the object property, useroot
)extract_unquoted
(usegetall
)select
(usexpath
)
From
SelectorList
:extract_unquoted
(usegetall
)select
(usexpath
)x
(usexpath
)
scrapy.spiders.BaseSpider
(useSpider
)From
Spider
(and subclasses):DOWNLOAD_DELAY
(use download_delay)set_crawler
(usefrom_crawler()
)
scrapy.spiders.spiders
(useSpiderLoader
)scrapy.telnet
(usescrapy.extensions.telnet
)From
scrapy.utils.python
:str_to_unicode
(useto_unicode
)unicode_to_str
(useto_bytes
)
scrapy.utils.response.body_or_str
The following deprecated settings have also been removed (issue 3578):
SPIDER_MANAGER_CLASS
(useSPIDER_LOADER_CLASS
)
Deprecations¶
The
queuelib.PriorityQueue
value for theSCHEDULER_PRIORITY_QUEUE
setting is deprecated. Usescrapy.pqueues.ScrapyPriorityQueue
instead.process_request
callbacks passed toRule
that do not accept two arguments are deprecated.The following modules are deprecated:
scrapy.utils.http
(use w3lib.http)scrapy.utils.markup
(use w3lib.html)scrapy.utils.multipart
(use urllib3)
The
scrapy.utils.datatypes.MergeDict
class is deprecated for Python 3 code bases. UseChainMap
instead. (issue 3878)The
scrapy.utils.gz.is_gzipped
function is deprecated. Usescrapy.utils.gz.gzip_magic_number
instead.
Other changes¶
It is now possible to run all tests from the same tox environment in parallel; the documentation now covers this and other ways to run tests (issue 3707)
It is now possible to generate an API documentation coverage report (issue 3806, issue 3810, issue 3860)
The documentation policies now require docstrings (issue 3701) that follow PEP 257 (issue 3748)
Internal fixes and cleanup (issue 3629, issue 3643, issue 3684, issue 3698, issue 3734, issue 3735, issue 3736, issue 3737, issue 3809, issue 3821, issue 3825, issue 3827, issue 3833, issue 3857, issue 3877)
Scrapy 1.6.0 (2019-01-30)¶
Highlights:
better Windows support;
Python 3.7 compatibility;
big documentation improvements, including a switch from
.extract_first()
+.extract()
API to.get()
+.getall()
API;feed exports, FilePipeline and MediaPipeline improvements;
better extensibility:
item_error
andrequest_reached_downloader
signals;from_crawler
support for feed exporters, feed storages and dupefilters.scrapy.contracts
fixes and new features;telnet console security improvements, first released as a backport in Scrapy 1.5.2 (2019-01-22);
clean-up of the deprecated code;
various bug fixes, small new features and usability improvements across the codebase.
Selector API changes¶
While these are not changes in Scrapy itself, but rather in the parsel
library which Scrapy uses for xpath/css selectors, these changes are
worth mentioning here. Scrapy now depends on parsel >= 1.5, and
Scrapy documentation is updated to follow recent parsel
API conventions.
Most visible change is that .get()
and .getall()
selector
methods are now preferred over .extract_first()
and .extract()
.
We feel that these new methods result in a more concise and readable code.
See extract() and extract_first() for more details.
Note
There are currently no plans to deprecate .extract()
and .extract_first()
methods.
Another useful new feature is the introduction of Selector.attrib
and
SelectorList.attrib
properties, which make it easier to get
attributes of HTML elements. See Selecting element attributes.
CSS selectors are cached in parsel >= 1.5, which makes them faster when the same CSS path is used many times. This is very common in case of Scrapy spiders: callbacks are usually called several times, on different pages.
If you’re using custom Selector
or SelectorList
subclasses,
a backward incompatible change in parsel may affect your code.
See parsel changelog for a detailed description, as well as for the
full list of improvements.
Telnet console¶
Backward incompatible: Scrapy’s telnet console now requires username and password. See Telnet Console for more details. This change fixes a security issue; see Scrapy 1.5.2 (2019-01-22) release notes for details.
New extensibility features¶
from_crawler
support is added to feed exporters and feed storages. This, among other things, allows to access Scrapy settings from custom feed storages and exporters (issue 1605, issue 3348).from_crawler
support is added to dupefilters (issue 2956); this allows to access e.g. settings or a spider from a dupefilter.item_error
is fired when an error happens in a pipeline (issue 3256);request_reached_downloader
is fired when Downloader gets a new Request; this signal can be useful e.g. for custom Schedulers (issue 3393).new SitemapSpider
sitemap_filter()
method which allows to select sitemap entries based on their attributes in SitemapSpider subclasses (issue 3512).Lazy loading of Downloader Handlers is now optional; this enables better initialization error handling in custom Downloader Handlers (issue 3394).
New FilePipeline and MediaPipeline features¶
Expose more options for S3FilesStore:
AWS_ENDPOINT_URL
,AWS_USE_SSL
,AWS_VERIFY
,AWS_REGION_NAME
. For example, this allows to use alternative or self-hosted AWS-compatible providers (issue 2609, issue 3548).ACL support for Google Cloud Storage:
FILES_STORE_GCS_ACL
andIMAGES_STORE_GCS_ACL
(issue 3199).
scrapy.contracts
improvements¶
Exceptions in contracts code are handled better (issue 3377);
dont_filter=True
is used for contract requests, which allows to test different callbacks with the same URL (issue 3381);request_cls
attribute in Contract subclasses allow to use different Request classes in contracts, for example FormRequest (issue 3383).Fixed errback handling in contracts, e.g. for cases where a contract is executed for URL which returns non-200 response (issue 3371).
Usability improvements¶
more stats for RobotsTxtMiddleware (issue 3100)
INFO log level is used to show telnet host/port (issue 3115)
a message is added to IgnoreRequest in RobotsTxtMiddleware (issue 3113)
better validation of
url
argument inResponse.follow
(issue 3131)non-zero exit code is returned from Scrapy commands when error happens on spider initialization (issue 3226)
Link extraction improvements: “ftp” is added to scheme list (issue 3152); “flv” is added to common video extensions (issue 3165)
better error message when an exporter is disabled (issue 3358);
scrapy shell --help
mentions syntax required for local files (./file.html
) - issue 3496.Referer header value is added to RFPDupeFilter log messages (issue 3588)
Bug fixes¶
fixed issue with extra blank lines in .csv exports under Windows (issue 3039);
proper handling of pickling errors in Python 3 when serializing objects for disk queues (issue 3082)
flags are now preserved when copying Requests (issue 3342);
FormRequest.from_response clickdata shouldn’t ignore elements with
input[type=image]
(issue 3153).FormRequest.from_response should preserve duplicate keys (issue 3247)
Documentation improvements¶
Docs are re-written to suggest .get/.getall API instead of .extract/.extract_first. Also, Selectors docs are updated and re-structured to match latest parsel docs; they now contain more topics, such as Selecting element attributes or Extensions to CSS Selectors (issue 3390).
Using your browser’s Developer Tools for scraping is a new tutorial which replaces old Firefox and Firebug tutorials (issue 3400).
SCRAPY_PROJECT environment variable is documented (issue 3518);
troubleshooting section is added to install instructions (issue 3517);
improved links to beginner resources in the tutorial (issue 3367, issue 3468);
fixed
RETRY_HTTP_CODES
default values in docs (issue 3335);remove unused
DEPTH_STATS
option from docs (issue 3245);other cleanups (issue 3347, issue 3350, issue 3445, issue 3544, issue 3605).
Deprecation removals¶
Compatibility shims for pre-1.0 Scrapy module names are removed (issue 3318):
scrapy.command
scrapy.contrib
(with all submodules)scrapy.contrib_exp
(with all submodules)scrapy.dupefilter
scrapy.linkextractor
scrapy.project
scrapy.spider
scrapy.spidermanager
scrapy.squeue
scrapy.stats
scrapy.statscol
scrapy.utils.decorator
See Module Relocations for more information, or use suggestions from Scrapy 1.5.x deprecation warnings to update your code.
Other deprecation removals:
Deprecated scrapy.interfaces.ISpiderManager is removed; please use scrapy.interfaces.ISpiderLoader.
Deprecated
CrawlerSettings
class is removed (issue 3327).Deprecated
Settings.overrides
andSettings.defaults
attributes are removed (issue 3327, issue 3359).
Other improvements, cleanups¶
All Scrapy tests now pass on Windows; Scrapy testing suite is executed in a Windows environment on CI (issue 3315).
Python 3.7 support (issue 3326, issue 3150, issue 3547).
Testing and CI fixes (issue 3526, issue 3538, issue 3308, issue 3311, issue 3309, issue 3305, issue 3210, issue 3299)
scrapy.http.cookies.CookieJar.clear
accepts “domain”, “path” and “name” optional arguments (issue 3231).additional files are included to sdist (issue 3495);
code style fixes (issue 3405, issue 3304);
unneeded .strip() call is removed (issue 3519);
collections.deque is used to store MiddlewareManager methods instead of a list (issue 3476)
Scrapy 1.5.2 (2019-01-22)¶
Security bugfix: Telnet console extension can be easily exploited by rogue websites POSTing content to http://localhost:6023, we haven’t found a way to exploit it from Scrapy, but it is very easy to trick a browser to do so and elevates the risk for local development environment.
The fix is backward incompatible, it enables telnet user-password authentication by default with a random generated password. If you can’t upgrade right away, please consider setting
TELNETCONSOLE_PORT
out of its default value.See telnet console documentation for more info
Backport CI build failure under GCE environment due to boto import error.
Scrapy 1.5.1 (2018-07-12)¶
This is a maintenance release with important bug fixes, but no new features:
O(N^2)
gzip decompression issue which affected Python 3 and PyPy is fixed (issue 3281);skipping of TLS validation errors is improved (issue 3166);
Ctrl-C handling is fixed in Python 3.5+ (issue 3096);
testing fixes (issue 3092, issue 3263);
documentation improvements (issue 3058, issue 3059, issue 3089, issue 3123, issue 3127, issue 3189, issue 3224, issue 3280, issue 3279, issue 3201, issue 3260, issue 3284, issue 3298, issue 3294).
Scrapy 1.5.0 (2017-12-29)¶
This release brings small new features and improvements across the codebase. Some highlights:
Google Cloud Storage is supported in FilesPipeline and ImagesPipeline.
Crawling with proxy servers becomes more efficient, as connections to proxies can be reused now.
Warnings, exception and logging messages are improved to make debugging easier.
scrapy parse
command now allows to set custom request meta via--meta
argument.Compatibility with Python 3.6, PyPy and PyPy3 is improved; PyPy and PyPy3 are now supported officially, by running tests on CI.
Better default handling of HTTP 308, 522 and 524 status codes.
Documentation is improved, as usual.
Backward Incompatible Changes¶
Scrapy 1.5 drops support for Python 3.3.
Default Scrapy User-Agent now uses https link to scrapy.org (issue 2983). This is technically backward-incompatible; override
USER_AGENT
if you relied on old value.Logging of settings overridden by
custom_settings
is fixed; this is technically backward-incompatible because the logger changes from[scrapy.utils.log]
to[scrapy.crawler]
. If you’re parsing Scrapy logs, please update your log parsers (issue 1343).LinkExtractor now ignores
m4v
extension by default, this is change in behavior.522 and 524 status codes are added to
RETRY_HTTP_CODES
(issue 2851)
New features¶
Support
<link>
tags inResponse.follow
(issue 2785)Support for
ptpython
REPL (issue 2654)Google Cloud Storage support for FilesPipeline and ImagesPipeline (issue 2923).
New
--meta
option of the “scrapy parse” command allows to pass additional request.meta (issue 2883)Populate spider variable when using
shell.inspect_response
(issue 2812)Handle HTTP 308 Permanent Redirect (issue 2844)
Add 522 and 524 to
RETRY_HTTP_CODES
(issue 2851)Log versions information at startup (issue 2857)
scrapy.mail.MailSender
now works in Python 3 (it requires Twisted 17.9.0)Connections to proxy servers are reused (issue 2743)
Add template for a downloader middleware (issue 2755)
Explicit message for NotImplementedError when parse callback not defined (issue 2831)
CrawlerProcess got an option to disable installation of root log handler (issue 2921)
LinkExtractor now ignores
m4v
extension by defaultBetter log messages for responses over
DOWNLOAD_WARNSIZE
andDOWNLOAD_MAXSIZE
limits (issue 2927)Show warning when a URL is put to
Spider.allowed_domains
instead of a domain (issue 2250).
Bug fixes¶
Fix logging of settings overridden by
custom_settings
; this is technically backward-incompatible because the logger changes from[scrapy.utils.log]
to[scrapy.crawler]
, so please update your log parsers if needed (issue 1343)Default Scrapy User-Agent now uses https link to scrapy.org (issue 2983). This is technically backward-incompatible; override
USER_AGENT
if you relied on old value.Fix PyPy and PyPy3 test failures, support them officially (issue 2793, issue 2935, issue 2990, issue 3050, issue 2213, issue 3048)
Fix DNS resolver when
DNSCACHE_ENABLED=False
(issue 2811)Add
cryptography
for Debian Jessie tox test env (issue 2848)Add verification to check if Request callback is callable (issue 2766)
Port
extras/qpsclient.py
to Python 3 (issue 2849)Use getfullargspec under the scenes for Python 3 to stop DeprecationWarning (issue 2862)
Update deprecated test aliases (issue 2876)
Fix
SitemapSpider
support for alternate links (issue 2853)
Docs¶
Added missing bullet point for the
AUTOTHROTTLE_TARGET_CONCURRENCY
setting. (issue 2756)Update Contributing docs, document new support channels (issue 2762, issue:3038)
Include references to Scrapy subreddit in the docs
Fix broken links; use https:// for external links (issue 2978, issue 2982, issue 2958)
Document CloseSpider extension better (issue 2759)
Use
pymongo.collection.Collection.insert_one()
in MongoDB example (issue 2781)Spelling mistake and typos (issue 2828, issue 2837, issue 2884, issue 2924)
Clarify
CSVFeedSpider.headers
documentation (issue 2826)Document
DontCloseSpider
exception and clarifyspider_idle
(issue 2791)Update “Releases” section in README (issue 2764)
Fix rst syntax in
DOWNLOAD_FAIL_ON_DATALOSS
docs (issue 2763)Small fix in description of startproject arguments (issue 2866)
Clarify data types in Response.body docs (issue 2922)
Add a note about
request.meta['depth']
to DepthMiddleware docs (issue 2374)Add a note about
request.meta['dont_merge_cookies']
to CookiesMiddleware docs (issue 2999)Up-to-date example of project structure (issue 2964, issue 2976)
A better example of ItemExporters usage (issue 2989)
Document
from_crawler
methods for spider and downloader middlewares (issue 3019)
Scrapy 1.4.0 (2017-05-18)¶
Scrapy 1.4 does not bring that many breathtaking new features but quite a few handy improvements nonetheless.
Scrapy now supports anonymous FTP sessions with customizable user and
password via the new FTP_USER
and FTP_PASSWORD
settings.
And if you’re using Twisted version 17.1.0 or above, FTP is now available
with Python 3.
There’s a new response.follow
method
for creating requests; it is now a recommended way to create Requests
in Scrapy spiders. This method makes it easier to write correct
spiders; response.follow
has several advantages over creating
scrapy.Request
objects directly:
it handles relative URLs;
it works properly with non-ascii URLs on non-UTF8 pages;
in addition to absolute and relative URLs it supports Selectors; for
<a>
elements it can also extract their href values.
For example, instead of this:
for href in response.css('li.page a::attr(href)').extract():
url = response.urljoin(href)
yield scrapy.Request(url, self.parse, encoding=response.encoding)
One can now write this:
for a in response.css('li.page a'):
yield response.follow(a, self.parse)
Link extractors are also improved. They work similarly to what a regular
modern browser would do: leading and trailing whitespace are removed
from attributes (think href=" http://example.com"
) when building
Link
objects. This whitespace-stripping also happens for action
attributes with FormRequest
.
Please also note that link extractors do not canonicalize URLs by default anymore. This was puzzling users every now and then, and it’s not what browsers do in fact, so we removed that extra transformation on extracted links.
For those of you wanting more control on the Referer:
header that Scrapy
sends when following links, you can set your own Referrer Policy
.
Prior to Scrapy 1.4, the default RefererMiddleware
would simply and
blindly set it to the URL of the response that generated the HTTP request
(which could leak information on your URL seeds).
By default, Scrapy now behaves much like your regular browser does.
And this policy is fully customizable with W3C standard values
(or with something really custom of your own if you wish).
See REFERRER_POLICY
for details.
To make Scrapy spiders easier to debug, Scrapy logs more stats by default in 1.4: memory usage stats, detailed retry stats, detailed HTTP error code stats. A similar change is that HTTP cache path is also visible in logs now.
Last but not least, Scrapy now has the option to make JSON and XML items
more human-readable, with newlines between items and even custom indenting
offset, using the new FEED_EXPORT_INDENT
setting.
Enjoy! (Or read on for the rest of changes in this release.)
Deprecations and Backward Incompatible Changes¶
Default to
canonicalize=False
inscrapy.linkextractors.LinkExtractor
(issue 2537, fixes issue 1941 and issue 1982): warning, this is technically backward-incompatibleEnable memusage extension by default (issue 2539, fixes issue 2187); this is technically backward-incompatible so please check if you have any non-default
MEMUSAGE_***
options set.EDITOR
environment variable now takes precedence overEDITOR
option defined in settings.py (issue 1829); Scrapy default settings no longer depend on environment variables. This is technically a backward incompatible change.Spider.make_requests_from_url
is deprecated (issue 1728, fixes issue 1495).
New Features¶
Accept proxy credentials in
proxy
request meta key (issue 2526)Support brotli-compressed content; requires optional brotlipy (issue 2535)
New response.follow shortcut for creating requests (issue 1940)
Added
flags
argument and attribute toRequest
objects (issue 2047)Support Anonymous FTP (issue 2342)
Added
retry/count
,retry/max_reached
andretry/reason_count/<reason>
stats toRetryMiddleware
(issue 2543)Added
httperror/response_ignored_count
andhttperror/response_ignored_status_count/<status>
stats toHttpErrorMiddleware
(issue 2566)Customizable
Referrer policy
inRefererMiddleware
(issue 2306)New
data:
URI download handler (issue 2334, fixes issue 2156)Log cache directory when HTTP Cache is used (issue 2611, fixes issue 2604)
Warn users when project contains duplicate spider names (fixes issue 2181)
scrapy.utils.datatypes.CaselessDict
now acceptsMapping
instances and not only dicts (issue 2646)Media downloads, with
FilesPipeline
orImagesPipeline
, can now optionally handle HTTP redirects using the newMEDIA_ALLOW_REDIRECTS
setting (issue 2616, fixes issue 2004)Accept non-complete responses from websites using a new
DOWNLOAD_FAIL_ON_DATALOSS
setting (issue 2590, fixes issue 2586)Optional pretty-printing of JSON and XML items via
FEED_EXPORT_INDENT
setting (issue 2456, fixes issue 1327)Allow dropping fields in
FormRequest.from_response
formdata whenNone
value is passed (issue 667)Per-request retry times with the new
max_retry_times
meta key (issue 2642)python -m scrapy
as a more explicit alternative toscrapy
command (issue 2740)
Bug fixes¶
LinkExtractor now strips leading and trailing whitespaces from attributes (issue 2547, fixes issue 1614)
Properly handle whitespaces in action attribute in
FormRequest
(issue 2548)Buffer CONNECT response bytes from proxy until all HTTP headers are received (issue 2495, fixes issue 2491)
FTP downloader now works on Python 3, provided you use Twisted>=17.1 (issue 2599)
Use body to choose response type after decompressing content (issue 2393, fixes issue 2145)
Always decompress
Content-Encoding: gzip
atHttpCompressionMiddleware
stage (issue 2391)Respect custom log level in
Spider.custom_settings
(issue 2581, fixes issue 1612)‘make htmlview’ fix for macOS (issue 2661)
Remove “commands” from the command list (issue 2695)
Fix duplicate Content-Length header for POST requests with empty body (issue 2677)
Properly cancel large downloads, i.e. above
DOWNLOAD_MAXSIZE
(issue 1616)ImagesPipeline: fixed processing of transparent PNG images with palette (issue 2675)
Cleanups & Refactoring¶
Tests: remove temp files and folders (issue 2570), fixed ProjectUtilsTest on macOS (issue 2569), use portable pypy for Linux on Travis CI (issue 2710)
Separate building request from
_requests_to_follow
in CrawlSpider (issue 2562)Remove “Python 3 progress” badge (issue 2567)
Add a couple more lines to
.gitignore
(issue 2557)Remove bumpversion prerelease configuration (issue 2159)
Add codecov.yml file (issue 2750)
Set context factory implementation based on Twisted version (issue 2577, fixes issue 2560)
Add omitted
self
arguments in default project middleware template (issue 2595)Remove redundant
slot.add_request()
call in ExecutionEngine (issue 2617)Catch more specific
os.error
exception inscrapy.pipelines.files.FSFilesStore
(issue 2644)Change “localhost” test server certificate (issue 2720)
Remove unused
MEMUSAGE_REPORT
setting (issue 2576)
Documentation¶
Binary mode is required for exporters (issue 2564, fixes issue 2553)
Mention issue with
FormRequest.from_response
due to bug in lxml (issue 2572)Use single quotes uniformly in templates (issue 2596)
Document
ftp_user
andftp_password
meta keys (issue 2587)Removed section on deprecated
contrib/
(issue 2636)Recommend Anaconda when installing Scrapy on Windows (issue 2477, fixes issue 2475)
FAQ: rewrite note on Python 3 support on Windows (issue 2690)
Rearrange selector sections (issue 2705)
Remove
__nonzero__
fromSelectorList
docs (issue 2683)Mention how to disable request filtering in documentation of
DUPEFILTER_CLASS
setting (issue 2714)Add sphinx_rtd_theme to docs setup readme (issue 2668)
Open file in text mode in JSON item writer example (issue 2729)
Clarify
allowed_domains
example (issue 2670)
Scrapy 1.3.3 (2017-03-10)¶
Bug fixes¶
Make
SpiderLoader
raiseImportError
again by default for missing dependencies and wrongSPIDER_MODULES
. These exceptions were silenced as warnings since 1.3.0. A new setting is introduced to toggle between warning or exception if needed ; seeSPIDER_LOADER_WARN_ONLY
for details.
Scrapy 1.3.2 (2017-02-13)¶
Bug fixes¶
Preserve request class when converting to/from dicts (utils.reqser) (issue 2510).
Use consistent selectors for author field in tutorial (issue 2551).
Fix TLS compatibility in Twisted 17+ (issue 2558)
Scrapy 1.3.1 (2017-02-08)¶
New features¶
Support
'True'
and'False'
string values for boolean settings (issue 2519); you can now do something likescrapy crawl myspider -s REDIRECT_ENABLED=False
.Support kwargs with
response.xpath()
to use XPath variables and ad-hoc namespaces declarations ; this requires at least Parsel v1.1 (issue 2457).Add support for Python 3.6 (issue 2485).
Run tests on PyPy (warning: some tests still fail, so PyPy is not supported yet).
Bug fixes¶
Enforce
DNS_TIMEOUT
setting (issue 2496).Fix
view
command ; it was a regression in v1.3.0 (issue 2503).Fix tests regarding
*_EXPIRES settings
with Files/Images pipelines (issue 2460).Fix name of generated pipeline class when using basic project template (issue 2466).
Fix compatibility with Twisted 17+ (issue 2496, issue 2528).
Fix
scrapy.Item
inheritance on Python 3.6 (issue 2511).Enforce numeric values for components order in
SPIDER_MIDDLEWARES
,DOWNLOADER_MIDDLEWARES
,EXTENSIONS
andSPIDER_CONTRACTS
(issue 2420).
Documentation¶
Reword Code of Conduct section and upgrade to Contributor Covenant v1.4 (issue 2469).
Clarify that passing spider arguments converts them to spider attributes (issue 2483).
Document
formid
argument onFormRequest.from_response()
(issue 2497).Add .rst extension to README files (issue 2507).
Mention LevelDB cache storage backend (issue 2525).
Use
yield
in sample callback code (issue 2533).Add note about HTML entities decoding with
.re()/.re_first()
(issue 1704).Typos (issue 2512, issue 2534, issue 2531).
Cleanups¶
Remove redundant check in
MetaRefreshMiddleware
(issue 2542).Faster checks in
LinkExtractor
for allow/deny patterns (issue 2538).Remove dead code supporting old Twisted versions (issue 2544).
Scrapy 1.3.0 (2016-12-21)¶
This release comes rather soon after 1.2.2 for one main reason:
it was found out that releases since 0.18 up to 1.2.2 (included) use
some backported code from Twisted (scrapy.xlib.tx.*
),
even if newer Twisted modules are available.
Scrapy now uses twisted.web.client
and twisted.internet.endpoints
directly.
(See also cleanups below.)
As it is a major change, we wanted to get the bug fix out quickly while not breaking any projects using the 1.2 series.
New Features¶
MailSender
now accepts single strings as values forto
andcc
arguments (issue 2272)scrapy fetch url
,scrapy shell url
andfetch(url)
inside Scrapy shell now follow HTTP redirections by default (issue 2290); Seefetch
andshell
for details.HttpErrorMiddleware
now logs errors withINFO
level instead ofDEBUG
; this is technically backward incompatible so please check your log parsers.By default, logger names now use a long-form path, e.g.
[scrapy.extensions.logstats]
, instead of the shorter “top-level” variant of prior releases (e.g.[scrapy]
); this is backward incompatible if you have log parsers expecting the short logger name part. You can switch back to short logger names usingLOG_SHORT_NAMES
set toTrue
.
Dependencies & Cleanups¶
Scrapy now requires Twisted >= 13.1 which is the case for many Linux distributions already.
As a consequence, we got rid of
scrapy.xlib.tx.*
modules, which copied some of Twisted code for users stuck with an “old” Twisted versionChunkedTransferMiddleware
is deprecated and removed from the default downloader middlewares.
Scrapy 1.2.3 (2017-03-03)¶
Packaging fix: disallow unsupported Twisted versions in setup.py
Scrapy 1.2.2 (2016-12-06)¶
Bug fixes¶
Fix a cryptic traceback when a pipeline fails on
open_spider()
(issue 2011)Fix embedded IPython shell variables (fixing issue 396 that re-appeared in 1.2.0, fixed in issue 2418)
A couple of patches when dealing with robots.txt:
handle (non-standard) relative sitemap URLs (issue 2390)
handle non-ASCII URLs and User-Agents in Python 2 (issue 2373)
Documentation¶
Document
"download_latency"
key inRequest
’smeta
dict (issue 2033)Remove page on (deprecated & unsupported) Ubuntu packages from ToC (issue 2335)
A few fixed typos (issue 2346, issue 2369, issue 2369, issue 2380) and clarifications (issue 2354, issue 2325, issue 2414)
Other changes¶
Advertize conda-forge as Scrapy’s official conda channel (issue 2387)
More helpful error messages when trying to use
.css()
or.xpath()
on non-Text Responses (issue 2264)startproject
command now generates a samplemiddlewares.py
file (issue 2335)Add more dependencies’ version info in
scrapy version
verbose output (issue 2404)Remove all
*.pyc
files from source distribution (issue 2386)
Scrapy 1.2.1 (2016-10-21)¶
Bug fixes¶
Include OpenSSL’s more permissive default ciphers when establishing TLS/SSL connections (issue 2314).
Fix “Location” HTTP header decoding on non-ASCII URL redirects (issue 2321).
Documentation¶
Fix JsonWriterPipeline example (issue 2302).
Various notes: issue 2330 on spider names, issue 2329 on middleware methods processing order, issue 2327 on getting multi-valued HTTP headers as lists.
Other changes¶
Removed
www.
fromstart_urls
in built-in spider templates (issue 2299).
Scrapy 1.2.0 (2016-10-03)¶
New Features¶
New
FEED_EXPORT_ENCODING
setting to customize the encoding used when writing items to a file. This can be used to turn off\uXXXX
escapes in JSON output. This is also useful for those wanting something else than UTF-8 for XML or CSV output (issue 2034).startproject
command now supports an optional destination directory to override the default one based on the project name (issue 2005).New
SCHEDULER_DEBUG
setting to log requests serialization failures (issue 1610).JSON encoder now supports serialization of
set
instances (issue 2058).Interpret
application/json-amazonui-streaming
asTextResponse
(issue 1503).scrapy
is imported by default when using shell tools (shell
, inspect_response) (issue 2248).
Bug fixes¶
DefaultRequestHeaders middleware now runs before UserAgent middleware (issue 2088). Warning: this is technically backward incompatible, though we consider this a bug fix.
HTTP cache extension and plugins that use the
.scrapy
data directory now work outside projects (issue 1581). Warning: this is technically backward incompatible, though we consider this a bug fix.Selector
does not allow passing bothresponse
andtext
anymore (issue 2153).Fixed logging of wrong callback name with
scrapy parse
(issue 2169).Fix for an odd gzip decompression bug (issue 1606).
Fix for selected callbacks when using
CrawlSpider
withscrapy parse
(issue 2225).Fix for invalid JSON and XML files when spider yields no items (issue 872).
Implement
flush()
fprStreamLogger
avoiding a warning in logs (issue 2125).
Refactoring¶
canonicalize_url
has been moved to w3lib.url (issue 2168).
Tests & Requirements¶
Scrapy’s new requirements baseline is Debian 8 “Jessie”. It was previously Ubuntu 12.04 Precise. What this means in practice is that we run continuous integration tests with these (main) packages versions at a minimum: Twisted 14.0, pyOpenSSL 0.14, lxml 3.4.
Scrapy may very well work with older versions of these packages (the code base still has switches for older Twisted versions for example) but it is not guaranteed (because it’s not tested anymore).
Documentation¶
Grammar fixes: issue 2128, issue 1566.
Download stats badge removed from README (issue 2160).
New Scrapy architecture diagram (issue 2165).
Updated
Response
parameters documentation (issue 2197).Reworded misleading
RANDOMIZE_DOWNLOAD_DELAY
description (issue 2190).Add StackOverflow as a support channel (issue 2257).
Scrapy 1.1.4 (2017-03-03)¶
Packaging fix: disallow unsupported Twisted versions in setup.py
Scrapy 1.1.3 (2016-09-22)¶
Bug fixes¶
Class attributes for subclasses of
ImagesPipeline
andFilesPipeline
work as they did before 1.1.1 (issue 2243, fixes issue 2198)
Documentation¶
Overview and tutorial rewritten to use http://toscrape.com websites (issue 2236, issue 2249, issue 2252).
Scrapy 1.1.2 (2016-08-18)¶
Bug fixes¶
Introduce a missing
IMAGES_STORE_S3_ACL
setting to override the default ACL policy inImagesPipeline
when uploading images to S3 (note that default ACL policy is “private” – instead of “public-read” – since Scrapy 1.1.0)IMAGES_EXPIRES
default value set back to 90 (the regression was introduced in 1.1.1)
Scrapy 1.1.1 (2016-07-13)¶
Bug fixes¶
Add “Host” header in CONNECT requests to HTTPS proxies (issue 2069)
Use response
body
when choosing response class (issue 2001, fixes issue 2000)Do not fail on canonicalizing URLs with wrong netlocs (issue 2038, fixes issue 2010)
a few fixes for
HttpCompressionMiddleware
(andSitemapSpider
):Do not decode HEAD responses (issue 2008, fixes issue 1899)
Handle charset parameter in gzip Content-Type header (issue 2050, fixes issue 2049)
Do not decompress gzip octet-stream responses (issue 2065, fixes issue 2063)
Catch (and ignore with a warning) exception when verifying certificate against IP-address hosts (issue 2094, fixes issue 2092)
Make
FilesPipeline
andImagesPipeline
backward compatible again regarding the use of legacy class attributes for customization (issue 1989, fixes issue 1985)
New features¶
Enable genspider command outside project folder (issue 2052)
Retry HTTPS CONNECT
TunnelError
by default (issue 1974)
Documentation¶
FEED_TEMPDIR
setting at lexicographical position (commit 9b3c72c)Use idiomatic
.extract_first()
in overview (issue 1994)Update years in copyright notice (commit c2c8036)
Add information and example on errbacks (issue 1995)
Use “url” variable in downloader middleware example (issue 2015)
Grammar fixes (issue 2054, issue 2120)
New FAQ entry on using BeautifulSoup in spider callbacks (issue 2048)
Add notes about Scrapy not working on Windows with Python 3 (issue 2060)
Encourage complete titles in pull requests (issue 2026)
Tests¶
Upgrade py.test requirement on Travis CI and Pin pytest-cov to 2.2.1 (issue 2095)
Scrapy 1.1.0 (2016-05-11)¶
This 1.1 release brings a lot of interesting features and bug fixes:
Scrapy 1.1 has beta Python 3 support (requires Twisted >= 15.5). See Beta Python 3 Support for more details and some limitations.
Hot new features:
Item loaders now support nested loaders (issue 1467).
FormRequest.from_response
improvements (issue 1382, issue 1137).Added setting
AUTOTHROTTLE_TARGET_CONCURRENCY
and improved AutoThrottle docs (issue 1324).Added
response.text
to get body as unicode (issue 1730).Anonymous S3 connections (issue 1358).
Deferreds in downloader middlewares (issue 1473). This enables better robots.txt handling (issue 1471).
HTTP caching now follows RFC2616 more closely, added settings
HTTPCACHE_ALWAYS_STORE
andHTTPCACHE_IGNORE_RESPONSE_CACHE_CONTROLS
(issue 1151).Selectors were extracted to the parsel library (issue 1409). This means you can use Scrapy Selectors without Scrapy and also upgrade the selectors engine without needing to upgrade Scrapy.
HTTPS downloader now does TLS protocol negotiation by default, instead of forcing TLS 1.0. You can also set the SSL/TLS method using the new
DOWNLOADER_CLIENT_TLS_METHOD
.
These bug fixes may require your attention:
Don’t retry bad requests (HTTP 400) by default (issue 1289). If you need the old behavior, add
400
toRETRY_HTTP_CODES
.Fix shell files argument handling (issue 1710, issue 1550). If you try
scrapy shell index.html
it will try to load the URL http://index.html, usescrapy shell ./index.html
to load a local file.Robots.txt compliance is now enabled by default for newly-created projects (issue 1724). Scrapy will also wait for robots.txt to be downloaded before proceeding with the crawl (issue 1735). If you want to disable this behavior, update
ROBOTSTXT_OBEY
insettings.py
file after creating a new project.Exporters now work on unicode, instead of bytes by default (issue 1080). If you use
PythonItemExporter
, you may want to update your code to disable binary mode which is now deprecated.Accept XML node names containing dots as valid (issue 1533).
When uploading files or images to S3 (with
FilesPipeline
orImagesPipeline
), the default ACL policy is now “private” instead of “public” Warning: backward incompatible!. You can useFILES_STORE_S3_ACL
to change it.We’ve reimplemented
canonicalize_url()
for more correct output, especially for URLs with non-ASCII characters (issue 1947). This could change link extractors output compared to previous Scrapy versions. This may also invalidate some cache entries you could still have from pre-1.1 runs. Warning: backward incompatible!.
Keep reading for more details on other improvements and bug fixes.
Beta Python 3 Support¶
We have been hard at work to make Scrapy run on Python 3. As a result, now you can run spiders on Python 3.3, 3.4 and 3.5 (Twisted >= 15.5 required). Some features are still missing (and some may never be ported).
Almost all builtin extensions/middlewares are expected to work. However, we are aware of some limitations in Python 3:
Scrapy does not work on Windows with Python 3
Sending emails is not supported
FTP download handler is not supported
Telnet console is not supported
Additional New Features and Enhancements¶
Scrapy now has a Code of Conduct (issue 1681).
Command line tool now has completion for zsh (issue 934).
Improvements to
scrapy shell
:Support for bpython and configure preferred Python shell via
SCRAPY_PYTHON_SHELL
(issue 1100, issue 1444).Support URLs without scheme (issue 1498) Warning: backward incompatible!
Bring back support for relative file path (issue 1710, issue 1550).
Added
MEMUSAGE_CHECK_INTERVAL_SECONDS
setting to change default check interval (issue 1282).Download handlers are now lazy-loaded on first request using their scheme (issue 1390, issue 1421).
HTTPS download handlers do not force TLS 1.0 anymore; instead, OpenSSL’s
SSLv23_method()/TLS_method()
is used allowing to try negotiating with the remote hosts the highest TLS protocol version it can (issue 1794, issue 1629).RedirectMiddleware
now skips the status codes fromhandle_httpstatus_list
on spider attribute or inRequest
’smeta
key (issue 1334, issue 1364, issue 1447).Form submission:
now works with
<button>
elements too (issue 1469).an empty string is now used for submit buttons without a value (issue 1472)
Dict-like settings now have per-key priorities (issue 1135, issue 1149 and issue 1586).
Sending non-ASCII emails (issue 1662)
CloseSpider
andSpiderState
extensions now get disabled if no relevant setting is set (issue 1723, issue 1725).Added method
ExecutionEngine.close
(issue 1423).Added method
CrawlerRunner.create_crawler
(issue 1528).Scheduler priority queue can now be customized via
SCHEDULER_PRIORITY_QUEUE
(issue 1822)..pps
links are now ignored by default in link extractors (issue 1835).temporary data folder for FTP and S3 feed storages can be customized using a new
FEED_TEMPDIR
setting (issue 1847).FilesPipeline
andImagesPipeline
settings are now instance attributes instead of class attributes, enabling spider-specific behaviors (issue 1891).JsonItemExporter
now formats opening and closing square brackets on their own line (first and last lines of output file) (issue 1950).If available,
botocore
is used forS3FeedStorage
,S3DownloadHandler
andS3FilesStore
(issue 1761, issue 1883).Tons of documentation updates and related fixes (issue 1291, issue 1302, issue 1335, issue 1683, issue 1660, issue 1642, issue 1721, issue 1727, issue 1879).
Other refactoring, optimizations and cleanup (issue 1476, issue 1481, issue 1477, issue 1315, issue 1290, issue 1750, issue 1881).
Deprecations and Removals¶
Added
to_bytes
andto_unicode
, deprecatedstr_to_unicode
andunicode_to_str
functions (issue 778).binary_is_text
is introduced, to replace use ofisbinarytext
(but with inverse return value) (issue 1851)The
optional_features
set has been removed (issue 1359).The
--lsprof
command line option has been removed (issue 1689). Warning: backward incompatible, but doesn’t break user code.The following datatypes were deprecated (issue 1720):
scrapy.utils.datatypes.MultiValueDictKeyError
scrapy.utils.datatypes.MultiValueDict
scrapy.utils.datatypes.SiteNode
The previously bundled
scrapy.xlib.pydispatch
library was deprecated and replaced by pydispatcher.
Relocations¶
telnetconsole
was relocated toextensions/
(issue 1524).Note: telnet is not enabled on Python 3 (https://github.com/scrapy/scrapy/pull/1524#issuecomment-146985595)
Bugfixes¶
Scrapy does not retry requests that got a
HTTP 400 Bad Request
response anymore (issue 1289). Warning: backward incompatible!Support empty password for http_proxy config (issue 1274).
Interpret
application/x-json
asTextResponse
(issue 1333).Support link rel attribute with multiple values (issue 1201).
Fixed
scrapy.http.FormRequest.from_response
when there is a<base>
tag (issue 1564).Fixed
TEMPLATES_DIR
handling (issue 1575).Various
FormRequest
fixes (issue 1595, issue 1596, issue 1597).Makes
_monkeypatches
more robust (issue 1634).Fixed bug on
XMLItemExporter
with non-string fields in items (issue 1738).Fixed startproject command in macOS (issue 1635).
Fixed
PythonItemExporter
and CSVExporter for non-string item types (issue 1737).Various logging related fixes (issue 1294, issue 1419, issue 1263, issue 1624, issue 1654, issue 1722, issue 1726 and issue 1303).
Fixed bug in
utils.template.render_templatefile()
(issue 1212).sitemaps extraction from
robots.txt
is now case-insensitive (issue 1902).HTTPS+CONNECT tunnels could get mixed up when using multiple proxies to same remote host (issue 1912).
Scrapy 1.0.7 (2017-03-03)¶
Packaging fix: disallow unsupported Twisted versions in setup.py
Scrapy 1.0.6 (2016-05-04)¶
FIX: RetryMiddleware is now robust to non-standard HTTP status codes (issue 1857)
FIX: Filestorage HTTP cache was checking wrong modified time (issue 1875)
DOC: Support for Sphinx 1.4+ (issue 1893)
DOC: Consistency in selectors examples (issue 1869)
Scrapy 1.0.5 (2016-02-04)¶
FIX: [Backport] Ignore bogus links in LinkExtractors (fixes issue 907, commit 108195e)
TST: Changed buildbot makefile to use ‘pytest’ (commit 1f3d90a)
DOC: Fixed typos in tutorial and media-pipeline (commit 808a9ea and commit 803bd87)
DOC: Add AjaxCrawlMiddleware to DOWNLOADER_MIDDLEWARES_BASE in settings docs (commit aa94121)
Scrapy 1.0.4 (2015-12-30)¶
Ignoring xlib/tx folder, depending on Twisted version. (commit 7dfa979)
Run on new travis-ci infra (commit 6e42f0b)
Spelling fixes (commit 823a1cc)
escape nodename in xmliter regex (commit da3c155)
test xml nodename with dots (commit 4418fc3)
TST don’t use broken Pillow version in tests (commit a55078c)
disable log on version command. closes #1426 (commit 86fc330)
disable log on startproject command (commit db4c9fe)
Add PyPI download stats badge (commit df2b944)
don’t run tests twice on Travis if a PR is made from a scrapy/scrapy branch (commit a83ab41)
Add Python 3 porting status badge to the README (commit 73ac80d)
fixed RFPDupeFilter persistence (commit 97d080e)
TST a test to show that dupefilter persistence is not working (commit 97f2fb3)
explicit close file on file:// scheme handler (commit d9b4850)
Disable dupefilter in shell (commit c0d0734)
DOC: Add captions to toctrees which appear in sidebar (commit aa239ad)
DOC Removed pywin32 from install instructions as it’s already declared as dependency. (commit 10eb400)
Added installation notes about using Conda for Windows and other OSes. (commit 1c3600a)
Fixed minor grammar issues. (commit 7f4ddd5)
fixed a typo in the documentation. (commit b71f677)
Version 1 now exists (commit 5456c0e)
fix another invalid xpath error (commit 0a1366e)
fix ValueError: Invalid XPath: //div/[id=”not-exists”]/text() on selectors.rst (commit ca8d60f)
Typos corrections (commit 7067117)
fix typos in downloader-middleware.rst and exceptions.rst, middlware -> middleware (commit 32f115c)
Add note to Ubuntu install section about Debian compatibility (commit 23fda69)
Replace alternative macOS install workaround with virtualenv (commit 98b63ee)
Reference Homebrew’s homepage for installation instructions (commit 1925db1)
Add oldest supported tox version to contributing docs (commit 5d10d6d)
Note in install docs about pip being already included in python>=2.7.9 (commit 85c980e)
Add non-python dependencies to Ubuntu install section in the docs (commit fbd010d)
Add macOS installation section to docs (commit d8f4cba)
DOC(ENH): specify path to rtd theme explicitly (commit de73b1a)
minor: scrapy.Spider docs grammar (commit 1ddcc7b)
Make common practices sample code match the comments (commit 1b85bcf)
nextcall repetitive calls (heartbeats). (commit 55f7104)
Backport fix compatibility with Twisted 15.4.0 (commit b262411)
pin pytest to 2.7.3 (commit a6535c2)
Merge pull request #1512 from mgedmin/patch-1 (commit 8876111)
Merge pull request #1513 from mgedmin/patch-2 (commit 5d4daf8)
Typo (commit f8d0682)
Fix list formatting (commit 5f83a93)
fix Scrapy squeue tests after recent changes to queuelib (commit 3365c01)
Merge pull request #1475 from rweindl/patch-1 (commit 2d688cd)
Update tutorial.rst (commit fbc1f25)
Merge pull request #1449 from rhoekman/patch-1 (commit 7d6538c)
Small grammatical change (commit 8752294)
Add openssl version to version command (commit 13c45ac)
Scrapy 1.0.3 (2015-08-11)¶
add service_identity to Scrapy install_requires (commit cbc2501)
Workaround for travis#296 (commit 66af9cd)
Scrapy 1.0.2 (2015-08-06)¶
Twisted 15.3.0 does not raises PicklingError serializing lambda functions (commit b04dd7d)
Minor method name fix (commit 6f85c7f)
minor: scrapy.Spider grammar and clarity (commit 9c9d2e0)
Put a blurb about support channels in CONTRIBUTING (commit c63882b)
Fixed typos (commit a9ae7b0)
Fix doc reference. (commit 7c8a4fe)
Scrapy 1.0.1 (2015-07-01)¶
Unquote request path before passing to FTPClient, it already escape paths (commit cc00ad2)
include tests/ to source distribution in MANIFEST.in (commit eca227e)
DOC Fix SelectJmes documentation (commit b8567bc)
DOC Bring Ubuntu and Archlinux outside of Windows subsection (commit 392233f)
DOC remove version suffix from Ubuntu package (commit 5303c66)
DOC Update release date for 1.0 (commit c89fa29)
Scrapy 1.0.0 (2015-06-19)¶
You will find a lot of new features and bugfixes in this major release. Make sure to check our updated overview to get a glance of some of the changes, along with our brushed tutorial.
Support for returning dictionaries in spiders¶
Declaring and returning Scrapy Items is no longer necessary to collect the scraped data from your spider, you can now return explicit dictionaries instead.
Classic version
class MyItem(scrapy.Item):
url = scrapy.Field()
class MySpider(scrapy.Spider):
def parse(self, response):
return MyItem(url=response.url)
New version
class MySpider(scrapy.Spider):
def parse(self, response):
return {'url': response.url}
Per-spider settings (GSoC 2014)¶
Last Google Summer of Code project accomplished an important redesign of the mechanism used for populating settings, introducing explicit priorities to override any given setting. As an extension of that goal, we included a new level of priority for settings that act exclusively for a single spider, allowing them to redefine project settings.
Start using it by defining a custom_settings
class variable in your spider:
class MySpider(scrapy.Spider):
custom_settings = {
"DOWNLOAD_DELAY": 5.0,
"RETRY_ENABLED": False,
}
Read more about settings population: Settings
Python Logging¶
Scrapy 1.0 has moved away from Twisted logging to support Python built in’s as default logging system. We’re maintaining backward compatibility for most of the old custom interface to call logging functions, but you’ll get warnings to switch to the Python logging API entirely.
Old version
from scrapy import log
log.msg('MESSAGE', log.INFO)
New version
import logging
logging.info('MESSAGE')
Logging with spiders remains the same, but on top of the
log()
method you’ll have access to a custom
logger
created for the spider to issue log
events:
class MySpider(scrapy.Spider):
def parse(self, response):
self.logger.info('Response received')
Read more in the logging documentation: Logging
Crawler API refactoring (GSoC 2014)¶
Another milestone for last Google Summer of Code was a refactoring of the internal API, seeking a simpler and easier usage. Check new core interface in: Core API
A common situation where you will face these changes is while running Scrapy from scripts. Here’s a quick example of how to run a Spider manually with the new API:
from scrapy.crawler import CrawlerProcess
process = CrawlerProcess({
'USER_AGENT': 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)'
})
process.crawl(MySpider)
process.start()
Bear in mind this feature is still under development and its API may change until it reaches a stable status.
See more examples for scripts running Scrapy: Common Practices
Module Relocations¶
There’s been a large rearrangement of modules trying to improve the general
structure of Scrapy. Main changes were separating various subpackages into
new projects and dissolving both scrapy.contrib
and scrapy.contrib_exp
into top level packages. Backward compatibility was kept among internal
relocations, while importing deprecated modules expect warnings indicating
their new place.
Full list of relocations¶
Outsourced packages
Note
These extensions went through some minor changes, e.g. some setting names were changed. Please check the documentation in each new repository to get familiar with the new usage.
Old location |
New location |
---|---|
scrapy.commands.deploy |
scrapyd-client (See other alternatives here: Deploying Spiders) |
scrapy.contrib.djangoitem |
|
scrapy.webservice |
scrapy.contrib_exp
and scrapy.contrib
dissolutions
Old location |
New location |
---|---|
scrapy.contrib_exp.downloadermiddleware.decompression |
scrapy.downloadermiddlewares.decompression |
scrapy.contrib_exp.iterators |
scrapy.utils.iterators |
scrapy.contrib.downloadermiddleware |
scrapy.downloadermiddlewares |
scrapy.contrib.exporter |
scrapy.exporters |
scrapy.contrib.linkextractors |
scrapy.linkextractors |
scrapy.contrib.loader |
scrapy.loader |
scrapy.contrib.loader.processor |
scrapy.loader.processors |
scrapy.contrib.pipeline |
scrapy.pipelines |
scrapy.contrib.spidermiddleware |
scrapy.spidermiddlewares |
scrapy.contrib.spiders |
scrapy.spiders |
|
scrapy.extensions.* |
Plural renames and Modules unification
Old location |
New location |
---|---|
scrapy.command |
scrapy.commands |
scrapy.dupefilter |
scrapy.dupefilters |
scrapy.linkextractor |
scrapy.linkextractors |
scrapy.spider |
scrapy.spiders |
scrapy.squeue |
scrapy.squeues |
scrapy.statscol |
scrapy.statscollectors |
scrapy.utils.decorator |
scrapy.utils.decorators |
Class renames
Old location |
New location |
---|---|
scrapy.spidermanager.SpiderManager |
scrapy.spiderloader.SpiderLoader |
Settings renames
Old location |
New location |
---|---|
SPIDER_MANAGER_CLASS |
SPIDER_LOADER_CLASS |
Changelog¶
New Features and Enhancements
Python logging (issue 1060, issue 1235, issue 1236, issue 1240, issue 1259, issue 1278, issue 1286)
FEED_EXPORT_FIELDS option (issue 1159, issue 1224)
Dns cache size and timeout options (issue 1132)
support namespace prefix in xmliter_lxml (issue 963)
Reactor threadpool max size setting (issue 1123)
Allow spiders to return dicts. (issue 1081)
Add Response.urljoin() helper (issue 1086)
look in ~/.config/scrapy.cfg for user config (issue 1098)
handle TLS SNI (issue 1101)
Selectorlist extract first (issue 624, issue 1145)
Added JmesSelect (issue 1016)
add gzip compression to filesystem http cache backend (issue 1020)
CSS support in link extractors (issue 983)
httpcache dont_cache meta #19 #689 (issue 821)
add signal to be sent when request is dropped by the scheduler (issue 961)
avoid download large response (issue 946)
Allow to specify the quotechar in CSVFeedSpider (issue 882)
Add referer to “Spider error processing” log message (issue 795)
process robots.txt once (issue 896)
GSoC Per-spider settings (issue 854)
Add project name validation (issue 817)
GSoC API cleanup (issue 816, issue 1128, issue 1147, issue 1148, issue 1156, issue 1185, issue 1187, issue 1258, issue 1268, issue 1276, issue 1285, issue 1284)
Be more responsive with IO operations (issue 1074 and issue 1075)
Do leveldb compaction for httpcache on closing (issue 1297)
Deprecations and Removals
Deprecate htmlparser link extractor (issue 1205)
remove deprecated code from FeedExporter (issue 1155)
a leftover for.15 compatibility (issue 925)
drop support for CONCURRENT_REQUESTS_PER_SPIDER (issue 895)
Drop old engine code (issue 911)
Deprecate SgmlLinkExtractor (issue 777)
Relocations
Move exporters/__init__.py to exporters.py (issue 1242)
Move base classes to their packages (issue 1218, issue 1233)
Module relocation (issue 1181, issue 1210)
rename SpiderManager to SpiderLoader (issue 1166)
Remove djangoitem (issue 1177)
remove scrapy deploy command (issue 1102)
dissolve contrib_exp (issue 1134)
Deleted bin folder from root, fixes #913 (issue 914)
Remove jsonrpc based webservice (issue 859)
Move Test cases under project root dir (issue 827, issue 841)
Fix backward incompatibility for relocated paths in settings (issue 1267)
Documentation
CrawlerProcess documentation (issue 1190)
Favoring web scraping over screen scraping in the descriptions (issue 1188)
Some improvements for Scrapy tutorial (issue 1180)
Documenting Files Pipeline together with Images Pipeline (issue 1150)
deployment docs tweaks (issue 1164)
Added deployment section covering scrapyd-deploy and shub (issue 1124)
Adding more settings to project template (issue 1073)
some improvements to overview page (issue 1106)
Updated link in docs/topics/architecture.rst (issue 647)
DOC reorder topics (issue 1022)
updating list of Request.meta special keys (issue 1071)
DOC document download_timeout (issue 898)
DOC simplify extension docs (issue 893)
Leaks docs (issue 894)
DOC document from_crawler method for item pipelines (issue 904)
Spider_error doesn’t support deferreds (issue 1292)
Corrections & Sphinx related fixes (issue 1220, issue 1219, issue 1196, issue 1172, issue 1171, issue 1169, issue 1160, issue 1154, issue 1127, issue 1112, issue 1105, issue 1041, issue 1082, issue 1033, issue 944, issue 866, issue 864, issue 796, issue 1260, issue 1271, issue 1293, issue 1298)
Bugfixes
Item multi inheritance fix (issue 353, issue 1228)
ItemLoader.load_item: iterate over copy of fields (issue 722)
Fix Unhandled error in Deferred (RobotsTxtMiddleware) (issue 1131, issue 1197)
Force to read DOWNLOAD_TIMEOUT as int (issue 954)
scrapy.utils.misc.load_object should print full traceback (issue 902)
Fix bug for “.local” host name (issue 878)
Fix for Enabled extensions, middlewares, pipelines info not printed anymore (issue 879)
fix dont_merge_cookies bad behaviour when set to false on meta (issue 846)
Python 3 In Progress Support
disable scrapy.telnet if twisted.conch is not available (issue 1161)
fix Python 3 syntax errors in ajaxcrawl.py (issue 1162)
more python3 compatibility changes for urllib (issue 1121)
assertItemsEqual was renamed to assertCountEqual in Python 3. (issue 1070)
Import unittest.mock if available. (issue 1066)
updated deprecated cgi.parse_qsl to use six’s parse_qsl (issue 909)
Prevent Python 3 port regressions (issue 830)
PY3: use MutableMapping for python 3 (issue 810)
PY3: use six.BytesIO and six.moves.cStringIO (issue 803)
PY3: fix xmlrpclib and email imports (issue 801)
PY3: use six for robotparser and urlparse (issue 800)
PY3: use six.iterkeys, six.iteritems, and tempfile (issue 799)
PY3: fix has_key and use six.moves.configparser (issue 798)
PY3: use six.moves.cPickle (issue 797)
PY3 make it possible to run some tests in Python3 (issue 776)
Tests
remove unnecessary lines from py3-ignores (issue 1243)
Fix remaining warnings from pytest while collecting tests (issue 1206)
Add docs build to travis (issue 1234)
TST don’t collect tests from deprecated modules. (issue 1165)
install service_identity package in tests to prevent warnings (issue 1168)
Fix deprecated settings API in tests (issue 1152)
Add test for webclient with POST method and no body given (issue 1089)
py3-ignores.txt supports comments (issue 1044)
modernize some of the asserts (issue 835)
selector.__repr__ test (issue 779)
Code refactoring
CSVFeedSpider cleanup: use iterate_spider_output (issue 1079)
remove unnecessary check from scrapy.utils.spider.iter_spider_output (issue 1078)
Pydispatch pep8 (issue 992)
Removed unused ‘load=False’ parameter from walk_modules() (issue 871)
For consistency, use
job_dir
helper inSpiderState
extension. (issue 805)rename “sflo” local variables to less cryptic “log_observer” (issue 775)
Scrapy 0.24.6 (2015-04-20)¶
encode invalid xpath with unicode_escape under PY2 (commit 07cb3e5)
fix IPython shell scope issue and load IPython user config (commit 2c8e573)
Fix small typo in the docs (commit d694019)
Fix small typo (commit f92fa83)
Converted sel.xpath() calls to response.xpath() in Extracting the data (commit c2c6d15)
Scrapy 0.24.5 (2015-02-25)¶
Support new _getEndpoint Agent signatures on Twisted 15.0.0 (commit 540b9bc)
DOC a couple more references are fixed (commit b4c454b)
DOC fix a reference (commit e3c1260)
t.i.b.ThreadedResolver is now a new-style class (commit 9e13f42)
S3DownloadHandler: fix auth for requests with quoted paths/query params (commit cdb9a0b)
fixed the variable types in mailsender documentation (commit bb3a848)
Reset items_scraped instead of item_count (commit edb07a4)
Tentative attention message about what document to read for contributions (commit 7ee6f7a)
mitmproxy 0.10.1 needs netlib 0.10.1 too (commit 874fcdd)
pin mitmproxy 0.10.1 as >0.11 does not work with tests (commit c6b21f0)
Test the parse command locally instead of against an external url (commit c3a6628)
Patches Twisted issue while closing the connection pool on HTTPDownloadHandler (commit d0bf957)
Updates documentation on dynamic item classes. (commit eeb589a)
Merge pull request #943 from Lazar-T/patch-3 (commit 5fdab02)
typo (commit b0ae199)
pywin32 is required by Twisted. closes #937 (commit 5cb0cfb)
Update install.rst (commit 781286b)
Merge pull request #928 from Lazar-T/patch-1 (commit b415d04)
comma instead of fullstop (commit 627b9ba)
Merge pull request #885 from jsma/patch-1 (commit de909ad)
Update request-response.rst (commit 3f3263d)
SgmlLinkExtractor - fix for parsing <area> tag with Unicode present (commit 49b40f0)
Scrapy 0.24.4 (2014-08-09)¶
pem file is used by mockserver and required by scrapy bench (commit 5eddc68)
scrapy bench needs scrapy.tests* (commit d6cb999)
Scrapy 0.24.3 (2014-08-09)¶
no need to waste travis-ci time on py3 for 0.24 (commit 8e080c1)
Update installation docs (commit 1d0c096)
There is a trove classifier for Scrapy framework! (commit 4c701d7)
update other places where w3lib version is mentioned (commit d109c13)
Update w3lib requirement to 1.8.0 (commit 39d2ce5)
Use w3lib.html.replace_entities() (remove_entities() is deprecated) (commit 180d3ad)
set zip_safe=False (commit a51ee8b)
do not ship tests package (commit ee3b371)
scrapy.bat is not needed anymore (commit c3861cf)
Modernize setup.py (commit 362e322)
headers can not handle non-string values (commit 94a5c65)
fix ftp test cases (commit a274a7f)
The sum up of travis-ci builds are taking like 50min to complete (commit ae1e2cc)
Update shell.rst typo (commit e49c96a)
removes weird indentation in the shell results (commit 1ca489d)
improved explanations, clarified blog post as source, added link for XPath string functions in the spec (commit 65c8f05)
renamed UserTimeoutError and ServerTimeouterror #583 (commit 037f6ab)
adding some xpath tips to selectors docs (commit 2d103e0)
fix tests to account for https://github.com/scrapy/w3lib/pull/23 (commit f8d366a)
get_func_args maximum recursion fix #728 (commit 81344ea)
Updated input/ouput processor example according to #560. (commit f7c4ea8)
Fixed Python syntax in tutorial. (commit db59ed9)
Add test case for tunneling proxy (commit f090260)
Bugfix for leaking Proxy-Authorization header to remote host when using tunneling (commit d8793af)
Extract links from XHTML documents with MIME-Type “application/xml” (commit ed1f376)
Merge pull request #793 from roysc/patch-1 (commit 91a1106)
Fix typo in commands.rst (commit 743e1e2)
better testcase for settings.overrides.setdefault (commit e22daaf)
Using CRLF as line marker according to http 1.1 definition (commit 5ec430b)
Scrapy 0.24.2 (2014-07-08)¶
Use a mutable mapping to proxy deprecated settings.overrides and settings.defaults attribute (commit e5e8133)
there is not support for python3 yet (commit 3cd6146)
Update python compatible version set to Debian packages (commit fa5d76b)
DOC fix formatting in release notes (commit c6a9e20)
Scrapy 0.24.1 (2014-06-27)¶
Fix deprecated CrawlerSettings and increase backward compatibility with .defaults attribute (commit 8e3f20a)
Scrapy 0.24.0 (2014-06-26)¶
Enhancements¶
Add new lxml based LinkExtractor to replace unmaintained SgmlLinkExtractor (issue 559, issue 761, issue 763)
Cleanup settings API - part of per-spider settings GSoC project (issue 737)
Add UTF8 encoding header to templates (issue 688, issue 762)
Telnet console now binds to 127.0.0.1 by default (issue 699)
Update Debian/Ubuntu install instructions (issue 509, issue 549)
Disable smart strings in lxml XPath evaluations (issue 535)
Restore filesystem based cache as default for http cache middleware (issue 541, issue 500, issue 571)
Expose current crawler in Scrapy shell (issue 557)
Improve testsuite comparing CSV and XML exporters (issue 570)
New
offsite/filtered
andoffsite/domains
stats (issue 566)Support process_links as generator in CrawlSpider (issue 555)
Verbose logging and new stats counters for DupeFilter (issue 553)
Add a mimetype parameter to
MailSender.send()
(issue 602)Generalize file pipeline log messages (issue 622)
Replace unencodeable codepoints with html entities in SGMLLinkExtractor (issue 565)
Converted SEP documents to rst format (issue 629, issue 630, issue 638, issue 632, issue 636, issue 640, issue 635, issue 634, issue 639, issue 637, issue 631, issue 633, issue 641, issue 642)
Tests and docs for clickdata’s nr index in FormRequest (issue 646, issue 645)
Allow to disable a downloader handler just like any other component (issue 650)
Log when a request is discarded after too many redirections (issue 654)
Log error responses if they are not handled by spider callbacks (issue 612, issue 656)
Add content-type check to http compression mw (issue 193, issue 660)
Run pypy tests using latest pypi from ppa (issue 674)
Run test suite using pytest instead of trial (issue 679)
Build docs and check for dead links in tox environment (issue 687)
Make scrapy.version_info a tuple of integers (issue 681, issue 692)
Infer exporter’s output format from filename extensions (issue 546, issue 659, issue 760)
Support case-insensitive domains in
url_is_from_any_domain()
(issue 693)Remove pep8 warnings in project and spider templates (issue 698)
Tests and docs for
request_fingerprint
function (issue 597)Update SEP-19 for GSoC project
per-spider settings
(issue 705)Set exit code to non-zero when contracts fails (issue 727)
Add a setting to control what class is instantiated as Downloader component (issue 738)
Pass response in
item_dropped
signal (issue 724)Improve
scrapy check
contracts command (issue 733, issue 752)Document
spider.closed()
shortcut (issue 719)Document
request_scheduled
signal (issue 746)Add a note about reporting security issues (issue 697)
Add LevelDB http cache storage backend (issue 626, issue 500)
Sort spider list output of
scrapy list
command (issue 742)Multiple documentation enhancements and fixes (issue 575, issue 587, issue 590, issue 596, issue 610, issue 617, issue 618, issue 627, issue 613, issue 643, issue 654, issue 675, issue 663, issue 711, issue 714)
Bugfixes¶
Encode unicode URL value when creating Links in RegexLinkExtractor (issue 561)
Ignore None values in ItemLoader processors (issue 556)
Fix link text when there is an inner tag in SGMLLinkExtractor and HtmlParserLinkExtractor (issue 485, issue 574)
Fix wrong checks on subclassing of deprecated classes (issue 581, issue 584)
Handle errors caused by inspect.stack() failures (issue 582)
Fix a reference to unexistent engine attribute (issue 593, issue 594)
Fix dynamic itemclass example usage of type() (issue 603)
Use lucasdemarchi/codespell to fix typos (issue 628)
Fix default value of attrs argument in SgmlLinkExtractor to be tuple (issue 661)
Fix XXE flaw in sitemap reader (issue 676)
Fix engine to support filtered start requests (issue 707)
Fix offsite middleware case on urls with no hostnames (issue 745)
Testsuite doesn’t require PIL anymore (issue 585)
Scrapy 0.22.2 (released 2014-02-14)¶
fix a reference to unexistent engine.slots. closes #593 (commit 13c099a)
downloaderMW doc typo (spiderMW doc copy remnant) (commit 8ae11bf)
Correct typos (commit 1346037)
Scrapy 0.22.1 (released 2014-02-08)¶
localhost666 can resolve under certain circumstances (commit 2ec2279)
test inspect.stack failure (commit cc3eda3)
Handle cases when inspect.stack() fails (commit 8cb44f9)
Fix wrong checks on subclassing of deprecated classes. closes #581 (commit 46d98d6)
Docs: 4-space indent for final spider example (commit 13846de)
Fix HtmlParserLinkExtractor and tests after #485 merge (commit 368a946)
BaseSgmlLinkExtractor: Fixed the missing space when the link has an inner tag (commit b566388)
BaseSgmlLinkExtractor: Added unit test of a link with an inner tag (commit c1cb418)
BaseSgmlLinkExtractor: Fixed unknown_endtag() so that it only set current_link=None when the end tag match the opening tag (commit 7e4d627)
Fix tests for Travis-CI build (commit 76c7e20)
replace unencodable codepoints with html entities. fixes #562 and #285 (commit 5f87b17)
RegexLinkExtractor: encode URL unicode value when creating Links (commit d0ee545)
Updated the tutorial crawl output with latest output. (commit 8da65de)
Updated shell docs with the crawler reference and fixed the actual shell output. (commit 875b9ab)
PEP8 minor edits. (commit f89efaf)
Expose current crawler in the Scrapy shell. (commit 5349cec)
Unused re import and PEP8 minor edits. (commit 387f414)
Ignore None’s values when using the ItemLoader. (commit 0632546)
DOC Fixed HTTPCACHE_STORAGE typo in the default value which is now Filesystem instead Dbm. (commit cde9a8c)
show Ubuntu setup instructions as literal code (commit fb5c9c5)
Update Ubuntu installation instructions (commit 70fb105)
Merge pull request #550 from stray-leone/patch-1 (commit 6f70b6a)
modify the version of Scrapy Ubuntu package (commit 725900d)
fix 0.22.0 release date (commit af0219a)
fix typos in news.rst and remove (not released yet) header (commit b7f58f4)
Scrapy 0.22.0 (released 2014-01-17)¶
Enhancements¶
[Backward incompatible] Switched HTTPCacheMiddleware backend to filesystem (issue 541) To restore old backend set
HTTPCACHE_STORAGE
toscrapy.contrib.httpcache.DbmCacheStorage
Proxy https:// urls using CONNECT method (issue 392, issue 397)
Add a middleware to crawl ajax crawleable pages as defined by google (issue 343)
Rename scrapy.spider.BaseSpider to scrapy.spider.Spider (issue 510, issue 519)
Selectors register EXSLT namespaces by default (issue 472)
Unify item loaders similar to selectors renaming (issue 461)
Make
RFPDupeFilter
class easily subclassable (issue 533)Improve test coverage and forthcoming Python 3 support (issue 525)
Promote startup info on settings and middleware to INFO level (issue 520)
Support partials in
get_func_args
util (issue 506, issue:504)Allow running individual tests via tox (issue 503)
Update extensions ignored by link extractors (issue 498)
Add middleware methods to get files/images/thumbs paths (issue 490)
Improve offsite middleware tests (issue 478)
Add a way to skip default Referer header set by RefererMiddleware (issue 475)
Do not send
x-gzip
in defaultAccept-Encoding
header (issue 469)Support defining http error handling using settings (issue 466)
Use modern python idioms wherever you find legacies (issue 497)
Improve and correct documentation (issue 527, issue 524, issue 521, issue 517, issue 512, issue 505, issue 502, issue 489, issue 465, issue 460, issue 425, issue 536)
Fixes¶
Update Selector class imports in CrawlSpider template (issue 484)
Fix unexistent reference to
engine.slots
(issue 464)Do not try to call
body_as_unicode()
on a non-TextResponse instance (issue 462)Warn when subclassing XPathItemLoader, previously it only warned on instantiation. (issue 523)
Warn when subclassing XPathSelector, previously it only warned on instantiation. (issue 537)
Multiple fixes to memory stats (issue 531, issue 530, issue 529)
Fix overriding url in
FormRequest.from_response()
(issue 507)Fix tests runner under pip 1.5 (issue 513)
Fix logging error when spider name is unicode (issue 479)
Scrapy 0.20.2 (released 2013-12-09)¶
Update CrawlSpider Template with Selector changes (commit 6d1457d)
fix method name in tutorial. closes GH-480 (commit b4fc359
Scrapy 0.20.1 (released 2013-11-28)¶
include_package_data is required to build wheels from published sources (commit 5ba1ad5)
process_parallel was leaking the failures on its internal deferreds. closes #458 (commit 419a780)
Scrapy 0.20.0 (released 2013-11-08)¶
Enhancements¶
New Selector’s API including CSS selectors (issue 395 and issue 426),
Request/Response url/body attributes are now immutable (modifying them had been deprecated for a long time)
ITEM_PIPELINES
is now defined as a dict (instead of a list)Sitemap spider can fetch alternate URLs (issue 360)
Selector.remove_namespaces()
now remove namespaces from element’s attributes. (issue 416)Paved the road for Python 3.3+ (issue 435, issue 436, issue 431, issue 452)
New item exporter using native python types with nesting support (issue 366)
Tune HTTP1.1 pool size so it matches concurrency defined by settings (commit b43b5f575)
scrapy.mail.MailSender now can connect over TLS or upgrade using STARTTLS (issue 327)
New FilesPipeline with functionality factored out from ImagesPipeline (issue 370, issue 409)
Recommend Pillow instead of PIL for image handling (issue 317)
Added Debian packages for Ubuntu Quantal and Raring (commit 86230c0)
Mock server (used for tests) can listen for HTTPS requests (issue 410)
Remove multi spider support from multiple core components (issue 422, issue 421, issue 420, issue 419, issue 423, issue 418)
Travis-CI now tests Scrapy changes against development versions of
w3lib
andqueuelib
python packages.Add pypy 2.1 to continuous integration tests (commit ecfa7431)
Pylinted, pep8 and removed old-style exceptions from source (issue 430, issue 432)
Use importlib for parametric imports (issue 445)
Handle a regression introduced in Python 2.7.5 that affects XmlItemExporter (issue 372)
Bugfix crawling shutdown on SIGINT (issue 450)
Do not submit
reset
type inputs in FormRequest.from_response (commit b326b87)Do not silence download errors when request errback raises an exception (commit 684cfc0)
Bugfixes¶
Fix tests under Django 1.6 (commit b6bed44c)
Lot of bugfixes to retry middleware under disconnections using HTTP 1.1 download handler
Fix inconsistencies among Twisted releases (issue 406)
Fix invalid variable name in setup.py (issue 429)
Fix tutorial references (issue 387)
Improve request-response docs (issue 391)
Improve best practices docs (issue 399, issue 400, issue 401, issue 402)
Improve django integration docs (issue 404)
Document
bindaddress
request meta (commit 37c24e01d7)Improve
Request
class documentation (issue 226)
Other¶
Dropped Python 2.6 support (issue 448)
Add cssselect python package as install dependency
Drop libxml2 and multi selector’s backend support, lxml is required from now on.
Minimum Twisted version increased to 10.0.0, dropped Twisted 8.0 support.
Running test suite now requires
mock
python library (issue 390)
Thanks¶
Thanks to everyone who contribute to this release!
List of contributors sorted by number of commits:
69 Daniel Graña <dangra@...>
37 Pablo Hoffman <pablo@...>
13 Mikhail Korobov <kmike84@...>
9 Alex Cepoi <alex.cepoi@...>
9 alexanderlukanin13 <alexander.lukanin.13@...>
8 Rolando Espinoza La fuente <darkrho@...>
8 Lukasz Biedrycki <lukasz.biedrycki@...>
6 Nicolas Ramirez <nramirez.uy@...>
3 Paul Tremberth <paul.tremberth@...>
2 Martin Olveyra <molveyra@...>
2 Stefan <misc@...>
2 Rolando Espinoza <darkrho@...>
2 Loren Davie <loren@...>
2 irgmedeiros <irgmedeiros@...>
1 Stefan Koch <taikano@...>
1 Stefan <cct@...>
1 scraperdragon <dragon@...>
1 Kumara Tharmalingam <ktharmal@...>
1 Francesco Piccinno <stack.box@...>
1 Marcos Campal <duendex@...>
1 Dragon Dave <dragon@...>
1 Capi Etheriel <barraponto@...>
1 cacovsky <amarquesferraz@...>
1 Berend Iwema <berend@...>
Scrapy 0.18.4 (released 2013-10-10)¶
IPython refuses to update the namespace. fix #396 (commit 3d32c4f)
Fix AlreadyCalledError replacing a request in shell command. closes #407 (commit b1d8919)
Fix start_requests laziness and early hangs (commit 89faf52)
Scrapy 0.18.3 (released 2013-10-03)¶
fix regression on lazy evaluation of start requests (commit 12693a5)
forms: do not submit reset inputs (commit e429f63)
increase unittest timeouts to decrease travis false positive failures (commit 912202e)
backport master fixes to json exporter (commit cfc2d46)
Fix permission and set umask before generating sdist tarball (commit 06149e0)
Scrapy 0.18.2 (released 2013-09-03)¶
Backport
scrapy check
command fixes and backward compatible multi crawler process(issue 339)
Scrapy 0.18.1 (released 2013-08-27)¶
remove extra import added by cherry picked changes (commit d20304e)
fix crawling tests under twisted pre 11.0.0 (commit 1994f38)
py26 can not format zero length fields {} (commit abf756f)
test PotentiaDataLoss errors on unbound responses (commit b15470d)
Treat responses without content-length or Transfer-Encoding as good responses (commit c4bf324)
do no include ResponseFailed if http11 handler is not enabled (commit 6cbe684)
New HTTP client wraps connection lost in ResponseFailed exception. fix #373 (commit 1a20bba)
limit travis-ci build matrix (commit 3b01bb8)
Merge pull request #375 from peterarenot/patch-1 (commit fa766d7)
Fixed so it refers to the correct folder (commit 3283809)
added Quantal & Raring to support Ubuntu releases (commit 1411923)
fix retry middleware which didn’t retry certain connection errors after the upgrade to http1 client, closes GH-373 (commit bb35ed0)
fix XmlItemExporter in Python 2.7.4 and 2.7.5 (commit de3e451)
minor updates to 0.18 release notes (commit c45e5f1)
fix contributors list format (commit 0b60031)
Scrapy 0.18.0 (released 2013-08-09)¶
Lot of improvements to testsuite run using Tox, including a way to test on pypi
Handle GET parameters for AJAX crawleable urls (commit 3fe2a32)
Use lxml recover option to parse sitemaps (issue 347)
Bugfix cookie merging by hostname and not by netloc (issue 352)
Support disabling
HttpCompressionMiddleware
using a flag setting (issue 359)Support xml namespaces using
iternodes
parser inXMLFeedSpider
(issue 12)Support
dont_cache
request meta flag (issue 19)Bugfix
scrapy.utils.gz.gunzip
broken by changes in python 2.7.4 (commit 4dc76e)Bugfix url encoding on
SgmlLinkExtractor
(issue 24)Bugfix
TakeFirst
processor shouldn’t discard zero (0) value (issue 59)Support nested items in xml exporter (issue 66)
Improve cookies handling performance (issue 77)
Log dupe filtered requests once (issue 105)
Split redirection middleware into status and meta based middlewares (issue 78)
Use HTTP1.1 as default downloader handler (issue 109 and issue 318)
Support xpath form selection on
FormRequest.from_response
(issue 185)Bugfix unicode decoding error on
SgmlLinkExtractor
(issue 199)Bugfix signal dispatching on pypi interpreter (issue 205)
Improve request delay and concurrency handling (issue 206)
Add RFC2616 cache policy to
HttpCacheMiddleware
(issue 212)Allow customization of messages logged by engine (issue 214)
Multiples improvements to
DjangoItem
(issue 217, issue 218, issue 221)Extend Scrapy commands using setuptools entry points (issue 260)
Allow spider
allowed_domains
value to be set/tuple (issue 261)Support
settings.getdict
(issue 269)Simplify internal
scrapy.core.scraper
slot handling (issue 271)Added
Item.copy
(issue 290)Collect idle downloader slots (issue 297)
Add
ftp://
scheme downloader handler (issue 329)Added downloader benchmark webserver and spider tools Benchmarking
Moved persistent (on disk) queues to a separate project (queuelib) which Scrapy now depends on
Add Scrapy commands using external libraries (issue 260)
Added
--pdb
option toscrapy
command line toolAdded
XPathSelector.remove_namespaces
which allows to remove all namespaces from XML documents for convenience (to work with namespace-less XPaths). Documented in Selectors.Several improvements to spider contracts
New default middleware named MetaRefreshMiddldeware that handles meta-refresh html tag redirections,
MetaRefreshMiddldeware and RedirectMiddleware have different priorities to address #62
added from_crawler method to spiders
added system tests with mock server
more improvements to macOS compatibility (thanks Alex Cepoi)
several more cleanups to singletons and multi-spider support (thanks Nicolas Ramirez)
support custom download slots
added –spider option to “shell” command.
log overridden settings when Scrapy starts
Thanks to everyone who contribute to this release. Here is a list of contributors sorted by number of commits:
130 Pablo Hoffman <pablo@...>
97 Daniel Graña <dangra@...>
20 Nicolás Ramírez <nramirez.uy@...>
13 Mikhail Korobov <kmike84@...>
12 Pedro Faustino <pedrobandim@...>
11 Steven Almeroth <sroth77@...>
5 Rolando Espinoza La fuente <darkrho@...>
4 Michal Danilak <mimino.coder@...>
4 Alex Cepoi <alex.cepoi@...>
4 Alexandr N Zamaraev (aka tonal) <tonal@...>
3 paul <paul.tremberth@...>
3 Martin Olveyra <molveyra@...>
3 Jordi Llonch <llonchj@...>
3 arijitchakraborty <myself.arijit@...>
2 Shane Evans <shane.evans@...>
2 joehillen <joehillen@...>
2 Hart <HartSimha@...>
2 Dan <ellisd23@...>
1 Zuhao Wan <wanzuhao@...>
1 whodatninja <blake@...>
1 vkrest <v.krestiannykov@...>
1 tpeng <pengtaoo@...>
1 Tom Mortimer-Jones <tom@...>
1 Rocio Aramberri <roschegel@...>
1 Pedro <pedro@...>
1 notsobad <wangxiaohugg@...>
1 Natan L <kuyanatan.nlao@...>
1 Mark Grey <mark.grey@...>
1 Luan <luanpab@...>
1 Libor Nenadál <libor.nenadal@...>
1 Juan M Uys <opyate@...>
1 Jonas Brunsgaard <jonas.brunsgaard@...>
1 Ilya Baryshev <baryshev@...>
1 Hasnain Lakhani <m.hasnain.lakhani@...>
1 Emanuel Schorsch <emschorsch@...>
1 Chris Tilden <chris.tilden@...>
1 Capi Etheriel <barraponto@...>
1 cacovsky <amarquesferraz@...>
1 Berend Iwema <berend@...>
Scrapy 0.16.5 (released 2013-05-30)¶
obey request method when Scrapy deploy is redirected to a new endpoint (commit 8c4fcee)
fix inaccurate downloader middleware documentation. refs #280 (commit 40667cb)
doc: remove links to diveintopython.org, which is no longer available. closes #246 (commit bd58bfa)
Find form nodes in invalid html5 documents (commit e3d6945)
Fix typo labeling attrs type bool instead of list (commit a274276)
Scrapy 0.16.4 (released 2013-01-23)¶
fixes spelling errors in documentation (commit 6d2b3aa)
add doc about disabling an extension. refs #132 (commit c90de33)
Fixed error message formatting. log.err() doesn’t support cool formatting and when error occurred, the message was: “ERROR: Error processing %(item)s” (commit c16150c)
lint and improve images pipeline error logging (commit 56b45fc)
fixed doc typos (commit 243be84)
add documentation topics: Broad Crawls & Common Practices (commit 1fbb715)
fix bug in Scrapy parse command when spider is not specified explicitly. closes #209 (commit c72e682)
Update docs/topics/commands.rst (commit 28eac7a)
Scrapy 0.16.3 (released 2012-12-07)¶
Remove concurrency limitation when using download delays and still ensure inter-request delays are enforced (commit 487b9b5)
add error details when image pipeline fails (commit 8232569)
improve macOS compatibility (commit 8dcf8aa)
setup.py: use README.rst to populate long_description (commit 7b5310d)
doc: removed obsolete references to ClientForm (commit 80f9bb6)
correct docs for default storage backend (commit 2aa491b)
doc: removed broken proxyhub link from FAQ (commit bdf61c4)
Fixed docs typo in SpiderOpenCloseLogging example (commit 7184094)
Scrapy 0.16.2 (released 2012-11-09)¶
Scrapy contracts: python2.6 compat (commit a4a9199)
Scrapy contracts verbose option (commit ec41673)
proper unittest-like output for Scrapy contracts (commit 86635e4)
added open_in_browser to debugging doc (commit c9b690d)
removed reference to global Scrapy stats from settings doc (commit dd55067)
Fix SpiderState bug in Windows platforms (commit 58998f4)
Scrapy 0.16.1 (released 2012-10-26)¶
fixed LogStats extension, which got broken after a wrong merge before the 0.16 release (commit 8c780fd)
better backward compatibility for scrapy.conf.settings (commit 3403089)
extended documentation on how to access crawler stats from extensions (commit c4da0b5)
removed .hgtags (no longer needed now that Scrapy uses git) (commit d52c188)
fix dashes under rst headers (commit fa4f7f9)
set release date for 0.16.0 in news (commit e292246)
Scrapy 0.16.0 (released 2012-10-18)¶
Scrapy changes:
added Spiders Contracts, a mechanism for testing spiders in a formal/reproducible way
added options
-o
and-t
to therunspider
commanddocumented AutoThrottle extension and added to extensions installed by default. You still need to enable it with
AUTOTHROTTLE_ENABLED
major Stats Collection refactoring: removed separation of global/per-spider stats, removed stats-related signals (
stats_spider_opened
, etc). Stats are much simpler now, backward compatibility is kept on the Stats Collector API and signals.added
process_start_requests()
method to spider middlewaresdropped Signals singleton. Signals should now be accessed through the Crawler.signals attribute. See the signals documentation for more info.
dropped Stats Collector singleton. Stats can now be accessed through the Crawler.stats attribute. See the stats collection documentation for more info.
documented Core API
lxml
is now the default selectors backend instead oflibxml2
ported FormRequest.from_response() to use lxml instead of ClientForm
removed modules:
scrapy.xlib.BeautifulSoup
andscrapy.xlib.ClientForm
SitemapSpider: added support for sitemap urls ending in .xml and .xml.gz, even if they advertise a wrong content type (commit 10ed28b)
StackTraceDump extension: also dump trackref live references (commit fe2ce93)
nested items now fully supported in JSON and JSONLines exporters
added
cookiejar
Request meta key to support multiple cookie sessions per spiderdecoupled encoding detection code to w3lib.encoding, and ported Scrapy code to use that module
dropped support for Python 2.5. See https://blog.scrapinghub.com/2012/02/27/scrapy-0-15-dropping-support-for-python-2-5/
dropped support for Twisted 2.5
added
REFERER_ENABLED
setting, to control referer middlewarechanged default user agent to:
Scrapy/VERSION (+http://scrapy.org)
removed (undocumented)
HTMLImageLinkExtractor
class fromscrapy.contrib.linkextractors.image
removed per-spider settings (to be replaced by instantiating multiple crawler objects)
USER_AGENT
spider attribute will no longer work, useuser_agent
attribute insteadDOWNLOAD_TIMEOUT
spider attribute will no longer work, usedownload_timeout
attribute insteadremoved
ENCODING_ALIASES
setting, as encoding auto-detection has been moved to the w3lib librarypromoted DjangoItem to main contrib
LogFormatter method now return dicts(instead of strings) to support lazy formatting (issue 164, commit dcef7b0)
downloader handlers (
DOWNLOAD_HANDLERS
setting) now receive settings as the first argument of the__init__
methodreplaced memory usage acounting with (more portable) resource module, removed
scrapy.utils.memory
moduleremoved signal:
scrapy.mail.mail_sent
removed
TRACK_REFS
setting, now trackrefs is always enabledDBM is now the default storage backend for HTTP cache middleware
number of log messages (per level) are now tracked through Scrapy stats (stat name:
log_count/LEVEL
)number received responses are now tracked through Scrapy stats (stat name:
response_received_count
)removed
scrapy.log.started
attribute
Scrapy 0.14.4¶
added precise to supported Ubuntu distros (commit b7e46df)
fixed bug in json-rpc webservice reported in https://groups.google.com/forum/#!topic/scrapy-users/qgVBmFybNAQ/discussion. also removed no longer supported ‘run’ command from extras/scrapy-ws.py (commit 340fbdb)
meta tag attributes for content-type http equiv can be in any order. #123 (commit 0cb68af)
replace “import Image” by more standard “from PIL import Image”. closes #88 (commit 4d17048)
return trial status as bin/runtests.sh exit value. #118 (commit b7b2e7f)
Scrapy 0.14.3¶
forgot to include pydispatch license. #118 (commit fd85f9c)
include egg files used by testsuite in source distribution. #118 (commit c897793)
update docstring in project template to avoid confusion with genspider command, which may be considered as an advanced feature. refs #107 (commit 2548dcc)
added note to docs/topics/firebug.rst about google directory being shut down (commit 668e352)
don’t discard slot when empty, just save in another dict in order to recycle if needed again. (commit 8e9f607)
do not fail handling unicode xpaths in libxml2 backed selectors (commit b830e95)
fixed minor mistake in Request objects documentation (commit bf3c9ee)
fixed minor defect in link extractors documentation (commit ba14f38)
removed some obsolete remaining code related to sqlite support in Scrapy (commit 0665175)
Scrapy 0.14.2¶
move buffer pointing to start of file before computing checksum. refs #92 (commit 6a5bef2)
Compute image checksum before persisting images. closes #92 (commit 9817df1)
remove leaking references in cached failures (commit 673a120)
fixed bug in MemoryUsage extension: get_engine_status() takes exactly 1 argument (0 given) (commit 11133e9)
fixed struct.error on http compression middleware. closes #87 (commit 1423140)
ajax crawling wasn’t expanding for unicode urls (commit 0de3fb4)
Catch start_requests iterator errors. refs #83 (commit 454a21d)
Speed-up libxml2 XPathSelector (commit 2fbd662)
updated versioning doc according to recent changes (commit 0a070f5)
scrapyd: fixed documentation link (commit 2b4e4c3)
extras/makedeb.py: no longer obtaining version from git (commit caffe0e)
Scrapy 0.14.1¶
extras/makedeb.py: no longer obtaining version from git (commit caffe0e)
bumped version to 0.14.1 (commit 6cb9e1c)
fixed reference to tutorial directory (commit 4b86bd6)
doc: removed duplicated callback argument from Request.replace() (commit 1aeccdd)
fixed formatting of scrapyd doc (commit 8bf19e6)
Dump stacks for all running threads and fix engine status dumped by StackTraceDump extension (commit 14a8e6e)
added comment about why we disable ssl on boto images upload (commit 5223575)
SSL handshaking hangs when doing too many parallel connections to S3 (commit 63d583d)
change tutorial to follow changes on dmoz site (commit bcb3198)
Avoid _disconnectedDeferred AttributeError exception in Twisted>=11.1.0 (commit 98f3f87)
allow spider to set autothrottle max concurrency (commit 175a4b5)
Scrapy 0.14¶
New features and settings¶
Support for AJAX crawleable urls
New persistent scheduler that stores requests on disk, allowing to suspend and resume crawls (r2737)
added
-o
option toscrapy crawl
, a shortcut for dumping scraped items into a file (or standard output using-
)Added support for passing custom settings to Scrapyd
schedule.json
api (r2779, r2783)New
ChunkedTransferMiddleware
(enabled by default) to support chunked transfer encoding (r2769)Add boto 2.0 support for S3 downloader handler (r2763)
In request errbacks, offending requests are now received in
failure.request
attribute (r2738)- Big downloader refactoring to support per domain/ip concurrency limits (r2732)
CONCURRENT_REQUESTS_PER_SPIDER
setting has been deprecated and replaced by:
check the documentation for more details
Added builtin caching DNS resolver (r2728)
Moved Amazon AWS-related components/extensions (SQS spider queue, SimpleDB stats collector) to a separate project: [scaws](https://github.com/scrapinghub/scaws) (r2706, r2714)
Moved spider queues to scrapyd:
scrapy.spiderqueue
->scrapyd.spiderqueue
(r2708)Moved sqlite utils to scrapyd:
scrapy.utils.sqlite
->scrapyd.sqlite
(r2781)Real support for returning iterators on
start_requests()
method. The iterator is now consumed during the crawl when the spider is getting idle (r2704)Added
REDIRECT_ENABLED
setting to quickly enable/disable the redirect middleware (r2697)Added
RETRY_ENABLED
setting to quickly enable/disable the retry middleware (r2694)Added
CloseSpider
exception to manually close spiders (r2691)Improved encoding detection by adding support for HTML5 meta charset declaration (r2690)
Refactored close spider behavior to wait for all downloads to finish and be processed by spiders, before closing the spider (r2688)
Added
SitemapSpider
(see documentation in Spiders page) (r2658)Added
LogStats
extension for periodically logging basic stats (like crawled pages and scraped items) (r2657)Make handling of gzipped responses more robust (#319, r2643). Now Scrapy will try and decompress as much as possible from a gzipped response, instead of failing with an
IOError
.Simplified !MemoryDebugger extension to use stats for dumping memory debugging info (r2639)
Added new command to edit spiders:
scrapy edit
(r2636) and-e
flag togenspider
command that uses it (r2653)Changed default representation of items to pretty-printed dicts. (r2631). This improves default logging by making log more readable in the default case, for both Scraped and Dropped lines.
Added
spider_error
signal (r2628)Added
COOKIES_ENABLED
setting (r2625)Stats are now dumped to Scrapy log (default value of
STATS_DUMP
setting has been changed toTrue
). This is to make Scrapy users more aware of Scrapy stats and the data that is collected there.Added support for dynamically adjusting download delay and maximum concurrent requests (r2599)
Added new DBM HTTP cache storage backend (r2576)
Added
listjobs.json
API to Scrapyd (r2571)CsvItemExporter
: addedjoin_multivalued
parameter (r2578)Added namespace support to
xmliter_lxml
(r2552)Improved cookies middleware by making
COOKIES_DEBUG
nicer and documenting it (r2579)Several improvements to Scrapyd and Link extractors
Code rearranged and removed¶
- Merged item passed and item scraped concepts, as they have often proved confusing in the past. This means: (r2630)
original item_scraped signal was removed
original item_passed signal was renamed to item_scraped
old log lines
Scraped Item...
were removedold log lines
Passed Item...
were renamed toScraped Item...
lines and downgraded toDEBUG
level
Removed unused function:
scrapy.utils.request.request_info()
(r2577)Removed googledir project from
examples/googledir
. There’s now a new example project calleddirbot
available on GitHub: https://github.com/scrapy/dirbotRemoved support for default field values in Scrapy items (r2616)
Removed experimental crawlspider v2 (r2632)
Removed scheduler middleware to simplify architecture. Duplicates filter is now done in the scheduler itself, using the same dupe fltering class as before (
DUPEFILTER_CLASS
setting) (r2640)Removed support for passing urls to
scrapy crawl
command (usescrapy parse
instead) (r2704)Removed deprecated Execution Queue (r2704)
Removed (undocumented) spider context extension (from scrapy.contrib.spidercontext) (r2780)
removed
CONCURRENT_SPIDERS
setting (use scrapyd maxproc instead) (r2789)Renamed attributes of core components: downloader.sites -> downloader.slots, scraper.sites -> scraper.slots (r2717, r2718)
Renamed setting
CLOSESPIDER_ITEMPASSED
toCLOSESPIDER_ITEMCOUNT
(r2655). Backward compatibility kept.
Scrapy 0.12¶
The numbers like #NNN reference tickets in the old issue tracker (Trac) which is no longer available.
New features and improvements¶
Passed item is now sent in the
item
argument of theitem_passed
(#273)Added verbose option to
scrapy version
command, useful for bug reports (#298)HTTP cache now stored by default in the project data dir (#279)
Added project data storage directory (#276, #277)
Documented file structure of Scrapy projects (see command-line tool doc)
New lxml backend for XPath selectors (#147)
Per-spider settings (#245)
Support exit codes to signal errors in Scrapy commands (#248)
Added
-c
argument toscrapy shell
commandMade
libxml2
optional (#260)New
deploy
command (#261)Added
CLOSESPIDER_PAGECOUNT
setting (#253)Added
CLOSESPIDER_ERRORCOUNT
setting (#254)
Scrapyd changes¶
Scrapyd now uses one process per spider
It stores one log file per spider run, and rotate them keeping the lastest 5 logs per spider (by default)
A minimal web ui was added, available at http://localhost:6800 by default
There is now a
scrapy server
command to start a Scrapyd server of the current project
Changes to settings¶
added
HTTPCACHE_ENABLED
setting (False by default) to enable HTTP cache middlewarechanged
HTTPCACHE_EXPIRATION_SECS
semantics: now zero means “never expire”.
Deprecated/obsoleted functionality¶
Deprecated
runserver
command in favor ofserver
command which starts a Scrapyd server. See also: Scrapyd changesDeprecated
queue
command in favor of using Scrapydschedule.json
API. See also: Scrapyd changesRemoved the !LxmlItemLoader (experimental contrib which never graduated to main contrib)
Scrapy 0.10¶
The numbers like #NNN reference tickets in the old issue tracker (Trac) which is no longer available.
New features and improvements¶
New Scrapy service called
scrapyd
for deploying Scrapy crawlers in production (#218) (documentation available)Simplified Images pipeline usage which doesn’t require subclassing your own images pipeline now (#217)
Scrapy shell now shows the Scrapy log by default (#206)
Refactored execution queue in a common base code and pluggable backends called “spider queues” (#220)
New persistent spider queue (based on SQLite) (#198), available by default, which allows to start Scrapy in server mode and then schedule spiders to run.
Added documentation for Scrapy command-line tool and all its available sub-commands. (documentation available)
Feed exporters with pluggable backends (#197) (documentation available)
Deferred signals (#193)
Added two new methods to item pipeline open_spider(), close_spider() with deferred support (#195)
Support for overriding default request headers per spider (#181)
Replaced default Spider Manager with one with similar functionality but not depending on Twisted Plugins (#186)
Splitted Debian package into two packages - the library and the service (#187)
Scrapy log refactoring (#188)
New extension for keeping persistent spider contexts among different runs (#203)
Added
dont_redirect
request.meta key for avoiding redirects (#233)Added
dont_retry
request.meta key for avoiding retries (#234)
Command-line tool changes¶
New
scrapy
command which replaces the oldscrapy-ctl.py
(#199) - there is only one globalscrapy
command now, instead of onescrapy-ctl.py
per project - Addedscrapy.bat
script for running more conveniently from WindowsAdded bash completion to command-line tool (#210)
Renamed command
start
torunserver
(#209)
API changes¶
url
andbody
attributes of Request objects are now read-only (#230)Request.copy()
andRequest.replace()
now also copies theircallback
anderrback
attributes (#231)Removed
UrlFilterMiddleware
fromscrapy.contrib
(already disabled by default)Offsite middleware doesn’t filter out any request coming from a spider that doesn’t have a allowed_domains attribute (#225)
Removed Spider Manager
load()
method. Now spiders are loaded in the__init__
method itself.- Changes to Scrapy Manager (now called “Crawler”):
scrapy.core.manager.ScrapyManager
class renamed toscrapy.crawler.Crawler
scrapy.core.manager.scrapymanager
singleton moved toscrapy.project.crawler
Moved module:
scrapy.contrib.spidermanager
toscrapy.spidermanager
Spider Manager singleton moved from
scrapy.spider.spiders
to thespiders` attribute of ``scrapy.project.crawler
singleton.- moved Stats Collector classes: (#204)
scrapy.stats.collector.StatsCollector
toscrapy.statscol.StatsCollector
scrapy.stats.collector.SimpledbStatsCollector
toscrapy.contrib.statscol.SimpledbStatsCollector
default per-command settings are now specified in the
default_settings
attribute of command object class (#201)- changed arguments of Item pipeline
process_item()
method from(spider, item)
to(item, spider)
backward compatibility kept (with deprecation warning)
- changed arguments of Item pipeline
- moved
scrapy.core.signals
module toscrapy.signals
backward compatibility kept (with deprecation warning)
- moved
- moved
scrapy.core.exceptions
module toscrapy.exceptions
backward compatibility kept (with deprecation warning)
- moved
added
handles_request()
class method toBaseSpider
dropped
scrapy.log.exc()
function (usescrapy.log.err()
instead)dropped
component
argument ofscrapy.log.msg()
functiondropped
scrapy.log.log_level
attributeAdded
from_settings()
class methods to Spider Manager, and Item Pipeline Manager
Changes to settings¶
Added
HTTPCACHE_IGNORE_SCHEMES
setting to ignore certain schemes on !HttpCacheMiddleware (#225)Added
SPIDER_QUEUE_CLASS
setting which defines the spider queue to use (#220)Added
KEEP_ALIVE
setting (#220)Removed
SERVICE_QUEUE
setting (#220)Removed
COMMANDS_SETTINGS_MODULE
setting (#201)Renamed
REQUEST_HANDLERS
toDOWNLOAD_HANDLERS
and make download handlers classes (instead of functions)
Scrapy 0.9¶
The numbers like #NNN reference tickets in the old issue tracker (Trac) which is no longer available.
New features and improvements¶
Added SMTP-AUTH support to scrapy.mail
New settings added:
MAIL_USER
,MAIL_PASS
(r2065 | #149)Added new scrapy-ctl view command - To view URL in the browser, as seen by Scrapy (r2039)
Added web service for controlling Scrapy process (this also deprecates the web console. (r2053 | #167)
Support for running Scrapy as a service, for production systems (r1988, r2054, r2055, r2056, r2057 | #168)
Added wrapper induction library (documentation only available in source code for now). (r2011)
Simplified and improved response encoding support (r1961, r1969)
Added
LOG_ENCODING
setting (r1956, documentation available)Added
RANDOMIZE_DOWNLOAD_DELAY
setting (enabled by default) (r1923, doc available)MailSender
is no longer IO-blocking (r1955 | #146)Linkextractors and new Crawlspider now handle relative base tag urls (r1960 | #148)
Several improvements to Item Loaders and processors (r2022, r2023, r2024, r2025, r2026, r2027, r2028, r2029, r2030)
Added support for adding variables to telnet console (r2047 | #165)
Support for requests without callbacks (r2050 | #166)
API changes¶
Change
Spider.domain_name
toSpider.name
(SEP-012, r1975)Response.encoding
is now the detected encoding (r1961)HttpErrorMiddleware
now returns None or raises an exception (r2006 | #157)Added
ExecutionQueue
for feeding spiders to scrape (r2034)Removed
ExecutionEngine
singleton (r2039)Ported
S3ImagesStore
(images pipeline) to use boto and threads (r2033)Moved module:
scrapy.management.telnet
toscrapy.telnet
(r2047)
Changes to default settings¶
Changed default
SCHEDULER_ORDER
toDFO
(r1939)
Scrapy 0.8¶
The numbers like #NNN reference tickets in the old issue tracker (Trac) which is no longer available.
New features¶
Added DEFAULT_RESPONSE_ENCODING setting (r1809)
Added
dont_click
argument toFormRequest.from_response()
method (r1813, r1816)Added
clickdata
argument toFormRequest.from_response()
method (r1802, r1803)Added support for HTTP proxies (
HttpProxyMiddleware
) (r1781, r1785)Offsite spider middleware now logs messages when filtering out requests (r1841)
Backward-incompatible changes¶
Changed
scrapy.utils.response.get_meta_refresh()
signature (r1804)Removed deprecated
scrapy.item.ScrapedItem
class - usescrapy.item.Item instead
(r1838)Removed deprecated
scrapy.xpath
module - usescrapy.selector
instead. (r1836)Removed deprecated
core.signals.domain_open
signal - usecore.signals.domain_opened
instead (r1822)log.msg()
now receives aspider
argument (r1822)Old domain argument has been deprecated and will be removed in 0.9. For spiders, you should always use the
spider
argument and pass spider references. If you really want to pass a string, use thecomponent
argument instead.
Changed core signals
domain_opened
,domain_closed
,domain_idle
- Changed Item pipeline to use spiders instead of domains
The
domain
argument ofprocess_item()
item pipeline method was changed tospider
, the new signature is:process_item(spider, item)
(r1827 | #105)To quickly port your code (to work with Scrapy 0.8) just use
spider.domain_name
where you previously useddomain
.
- Changed Stats API to use spiders instead of domains (r1849 | #113)
StatsCollector
was changed to receive spider references (instead of domains) in its methods (set_value
,inc_value
, etc).added
StatsCollector.iter_spider_stats()
methodremoved
StatsCollector.list_domains()
methodAlso, Stats signals were renamed and now pass around spider references (instead of domains). Here’s a summary of the changes:
To quickly port your code (to work with Scrapy 0.8) just use
spider.domain_name
where you previously useddomain
.spider_stats
contains exactly the same data asdomain_stats
.
CloseDomain
extension moved toscrapy.contrib.closespider.CloseSpider
(r1833)- Its settings were also renamed:
CLOSEDOMAIN_TIMEOUT
toCLOSESPIDER_TIMEOUT
CLOSEDOMAIN_ITEMCOUNT
toCLOSESPIDER_ITEMCOUNT
Removed deprecated
SCRAPYSETTINGS_MODULE
environment variable - useSCRAPY_SETTINGS_MODULE
instead (r1840)Renamed setting:
REQUESTS_PER_DOMAIN
toCONCURRENT_REQUESTS_PER_SPIDER
(r1830, r1844)Renamed setting:
CONCURRENT_DOMAINS
toCONCURRENT_SPIDERS
(r1830)Refactored HTTP Cache middleware
HTTP Cache middleware has been heavilty refactored, retaining the same functionality except for the domain sectorization which was removed. (r1843 )
Renamed exception:
DontCloseDomain
toDontCloseSpider
(r1859 | #120)Renamed extension:
DelayedCloseDomain
toSpiderCloseDelay
(r1861 | #121)Removed obsolete
scrapy.utils.markup.remove_escape_chars
function - usescrapy.utils.markup.replace_escape_chars
instead (r1865)
Scrapy 0.7¶
First release of Scrapy.