rdflib.plugins.parsers package

Submodules

rdflib.plugins.parsers.RDFVOC module

class rdflib.plugins.parsers.RDFVOC.RDFVOC[source]

Bases: RDF

Description: URIRef = rdflib.term.URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#Description')
ID: URIRef = rdflib.term.URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#ID')
RDF: URIRef = rdflib.term.URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#RDF')
about: URIRef = rdflib.term.URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#about')
datatype: URIRef = rdflib.term.URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#datatype')
li: URIRef = rdflib.term.URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#li')
nodeID: URIRef = rdflib.term.URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#nodeID')
parseType: URIRef = rdflib.term.URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#parseType')
resource: URIRef = rdflib.term.URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#resource')

rdflib.plugins.parsers.hext module

This is a rdflib plugin for parsing Hextuple files, which are Newline-Delimited JSON (ndjson) files, into Conjunctive. The store that backs the graph must be able to handle contexts, i.e. multiple graphs.

class rdflib.plugins.parsers.hext.HextuplesParser[source]

Bases: Parser

An RDFLib parser for Hextuples

__annotations__ = {}
__dict__ = mappingproxy({'__module__': 'rdflib.plugins.parsers.hext', '__doc__': '\n    An RDFLib parser for Hextuples\n\n    ', '__init__': <function HextuplesParser.__init__>, '_load_json_line': <function HextuplesParser._load_json_line>, '_parse_hextuple': <function HextuplesParser._parse_hextuple>, 'parse': <function HextuplesParser.parse>, '__dict__': <attribute '__dict__' of 'HextuplesParser' objects>, '__weakref__': <attribute '__weakref__' of 'HextuplesParser' objects>, '__annotations__': {}})
__init__()[source]
__module__ = 'rdflib.plugins.parsers.hext'
__weakref__

list of weak references to the object (if defined)

parse(source, graph, **kwargs)[source]
Parameters:
Return type:

None

rdflib.plugins.parsers.jsonld module

This parser will interpret a JSON-LD document as an RDF Graph. See:

Example usage:

>>> from rdflib import Graph, URIRef, Literal
>>> test_json = '''
... {
...     "@context": {
...         "dc": "http://purl.org/dc/terms/",
...         "rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
...         "rdfs": "http://www.w3.org/2000/01/rdf-schema#"
...     },
...     "@id": "http://example.org/about",
...     "dc:title": {
...         "@language": "en",
...         "@value": "Someone's Homepage"
...     }
... }
... '''
>>> g = Graph().parse(data=test_json, format='json-ld')
>>> list(g) == [(URIRef('http://example.org/about'),
...     URIRef('http://purl.org/dc/terms/title'),
...     Literal("Someone's Homepage", lang='en'))]
True
class rdflib.plugins.parsers.jsonld.JsonLDParser[source]

Bases: Parser

__annotations__ = {}
__dict__ = mappingproxy({'__module__': 'rdflib.plugins.parsers.jsonld', '__init__': <function JsonLDParser.__init__>, 'parse': <function JsonLDParser.parse>, '__dict__': <attribute '__dict__' of 'JsonLDParser' objects>, '__weakref__': <attribute '__weakref__' of 'JsonLDParser' objects>, '__doc__': None, '__annotations__': {}})
__init__()[source]
__module__ = 'rdflib.plugins.parsers.jsonld'
__weakref__

list of weak references to the object (if defined)

parse(source, sink, **kwargs)[source]
Parameters:
Return type:

None

rdflib.plugins.parsers.jsonld.to_rdf(data, dataset, base=None, context_data=None, version=None, generalized_rdf=False, allow_lists_of_lists=None)[source]
Parameters:

rdflib.plugins.parsers.notation3 module

notation3.py - Standalone Notation3 Parser Derived from CWM, the Closed World Machine

Authors of the original suite:

http://www.w3.org/2000/10/swap/notation3.py

Copyright 2000-2007, World Wide Web Consortium. Copyright 2001, MIT. Copyright 2001, Zolera Systems Inc.

License: W3C Software License http://www.w3.org/Consortium/Legal/copyright-software

Modified by Sean B. Palmer Copyright 2007, Sean B. Palmer.

Modified to work with rdflib by Gunnar Aastrand Grimnes Copyright 2010, Gunnar A. Grimnes

exception rdflib.plugins.parsers.notation3.BadSyntax(uri, lines, argstr, i, why)[source]

Bases: SyntaxError

Parameters:
__init__(uri, lines, argstr, i, why)[source]
Parameters:
__module__ = 'rdflib.plugins.parsers.notation3'
__str__()[source]

Return str(self).

Return type:

str

__weakref__

list of weak references to the object (if defined)

property message: str
class rdflib.plugins.parsers.notation3.Formula(parent)[source]

Bases: object

Parameters:

parent (Graph) –

__dict__ = mappingproxy({'__module__': 'rdflib.plugins.parsers.notation3', 'number': 0, '__init__': <function Formula.__init__>, '__str__': <function Formula.__str__>, 'id': <function Formula.id>, 'newBlankNode': <function Formula.newBlankNode>, 'newUniversal': <function Formula.newUniversal>, 'declareExistential': <function Formula.declareExistential>, 'close': <function Formula.close>, '__dict__': <attribute '__dict__' of 'Formula' objects>, '__weakref__': <attribute '__weakref__' of 'Formula' objects>, '__doc__': None, '__annotations__': {'existentials': 'Dict[str, BNode]', 'universals': 'Dict[str, BNode]'}})
__init__(parent)[source]
Parameters:

parent (Graph) –

__module__ = 'rdflib.plugins.parsers.notation3'
__str__()[source]

Return str(self).

Return type:

str

__weakref__

list of weak references to the object (if defined)

close()[source]
Return type:

QuotedGraph

declareExistential(x)[source]
Parameters:

x (str) –

Return type:

None

id()[source]
Return type:

BNode

newBlankNode(uri=None, why=None)[source]
Parameters:
Return type:

BNode

newUniversal(uri, why=None)[source]
Parameters:
Return type:

Variable

number = 0
class rdflib.plugins.parsers.notation3.N3Parser[source]

Bases: TurtleParser

An RDFLib parser for Notation3

See http://www.w3.org/DesignIssues/Notation3.html

__annotations__ = {}
__init__()[source]
__module__ = 'rdflib.plugins.parsers.notation3'
parse(source, graph, encoding='utf-8')[source]
Parameters:
Return type:

None

class rdflib.plugins.parsers.notation3.RDFSink(graph)[source]

Bases: object

Parameters:

graph (Graph) –

__dict__ = mappingproxy({'__module__': 'rdflib.plugins.parsers.notation3', '__init__': <function RDFSink.__init__>, 'newFormula': <function RDFSink.newFormula>, 'newGraph': <function RDFSink.newGraph>, 'newSymbol': <function RDFSink.newSymbol>, 'newBlankNode': <function RDFSink.newBlankNode>, 'newLiteral': <function RDFSink.newLiteral>, 'newList': <function RDFSink.newList>, 'newSet': <function RDFSink.newSet>, 'setDefaultNamespace': <function RDFSink.setDefaultNamespace>, 'makeStatement': <function RDFSink.makeStatement>, 'normalise': <function RDFSink.normalise>, 'intern': <function RDFSink.intern>, 'bind': <function RDFSink.bind>, 'startDoc': <function RDFSink.startDoc>, 'endDoc': <function RDFSink.endDoc>, '__dict__': <attribute '__dict__' of 'RDFSink' objects>, '__weakref__': <attribute '__weakref__' of 'RDFSink' objects>, '__doc__': None, '__annotations__': {'rootFormula': 'Optional[Formula]'}})
__init__(graph)[source]
Parameters:

graph (Graph) –

__module__ = 'rdflib.plugins.parsers.notation3'
__weakref__

list of weak references to the object (if defined)

bind(pfx, uri)[source]
Return type:

None

endDoc(formula)[source]
Parameters:

formula (Optional[Formula]) –

Return type:

None

intern(something)[source]
Parameters:

something (TypeVar(_AnyT)) –

Return type:

TypeVar(_AnyT)

makeStatement(quadruple, why=None)[source]
Parameters:
Return type:

None

newBlankNode(arg=None, uri=None, why=None)[source]
Parameters:
Return type:

BNode

newFormula()[source]
Return type:

Formula

newGraph(identifier)[source]
Parameters:

identifier (Identifier) –

Return type:

Graph

newList(n, f)[source]
Parameters:
Return type:

IdentifiedNode

newLiteral(s, dt, lang)[source]
Parameters:
Return type:

Literal

newSet(*args)[source]
Parameters:

args (TypeVar(_AnyT)) –

Return type:

Set[TypeVar(_AnyT)]

newSymbol(*args)[source]
Parameters:

args (str) –

Return type:

URIRef

normalise(f, n)[source]
Parameters:
Return type:

Union[URIRef, Literal, BNode, TypeVar(_AnyT)]

setDefaultNamespace(*args)[source]
Parameters:

args (bytes) –

Return type:

str

startDoc(formula)[source]
Parameters:

formula (Optional[Formula]) –

Return type:

None

class rdflib.plugins.parsers.notation3.SinkParser(store, openFormula=None, thisDoc='', baseURI=None, genPrefix='', why=None, turtle=False)[source]

Bases: object

Parameters:
BadSyntax(argstr, i, msg)[source]
Parameters:
Return type:

NoReturn

UEscape(argstr, i, startline)[source]
Parameters:

  • argstr (str) –

  • i (int) –

  • startline (int) –

Return type:

Tuple[int, str]

__dict__ = mappingproxy({'__module__': 'rdflib.plugins.parsers.notation3', '__init__': <function SinkParser.__init__>, 'here': <function SinkParser.here>, 'formula': <function SinkParser.formula>, 'loadStream': <function SinkParser.loadStream>, 'loadBuf': <function SinkParser.loadBuf>, 'feed': <function SinkParser.feed>, 'directiveOrStatement': <function SinkParser.directiveOrStatement>, 'tok': <function SinkParser.tok>, 'sparqlTok': <function SinkParser.sparqlTok>, 'directive': <function SinkParser.directive>, 'sparqlDirective': <function SinkParser.sparqlDirective>, 'bind': <function SinkParser.bind>, 'setKeywords': <function SinkParser.setKeywords>, 'startDoc': <function SinkParser.startDoc>, 'endDoc': <function SinkParser.endDoc>, 'makeStatement': <function SinkParser.makeStatement>, 'statement': <function SinkParser.statement>, 'subject': <function SinkParser.subject>, 'verb': <function SinkParser.verb>, 'prop': <function SinkParser.prop>, 'item': <function SinkParser.item>, 'blankNode': <function SinkParser.blankNode>, 'path': <function SinkParser.path>, 'anonymousNode': <function SinkParser.anonymousNode>, 'node': <function SinkParser.node>, 'property_list': <function SinkParser.property_list>, 'commaSeparatedList': <function SinkParser.commaSeparatedList>, 'objectList': <function SinkParser.objectList>, 'checkDot': <function SinkParser.checkDot>, 'uri_ref2': <function SinkParser.uri_ref2>, 'skipSpace': <function SinkParser.skipSpace>, 'variable': <function SinkParser.variable>, 'bareWord': <function SinkParser.bareWord>, 'qname': <function SinkParser.qname>, 'object': <function SinkParser.object>, 'nodeOrLiteral': <function SinkParser.nodeOrLiteral>, 'uriOf': <function SinkParser.uriOf>, 'strconst': <function SinkParser.strconst>, '_unicodeEscape': <function SinkParser._unicodeEscape>, 'uEscape': <function SinkParser.uEscape>, 'UEscape': <function SinkParser.UEscape>, 'BadSyntax': <function SinkParser.BadSyntax>, '__dict__': <attribute '__dict__' of 'SinkParser' objects>, '__weakref__': <attribute '__weakref__' of 'SinkParser' objects>, '__doc__': None, '__annotations__': {'_anonymousNodes': 'Dict[str, BNode]', '_variables': 'Dict[str, Variable]', '_parentVariables': 'Dict[str, Variable]', '_reason2': 'Optional[Callable[..., None]]', '_baseURI': 'Optional[str]', '_formula': 'Optional[Formula]', '_context': 'Optional[Formula]', '_parentContext': 'Optional[Formula]'}})
__init__(store, openFormula=None, thisDoc='', baseURI=None, genPrefix='', why=None, turtle=False)[source]

note: namespace names should not end in # ; the # will get added during qname processing

Parameters:
__module__ = 'rdflib.plugins.parsers.notation3'
__weakref__

list of weak references to the object (if defined)

anonymousNode(ln)[source]

Remember or generate a term for one of these _: anonymous nodes

Parameters:

ln (str) –

Return type:

BNode

bareWord(argstr, i, res)[source]

abc -> :abc

Parameters:
Return type:

int

bind(qn, uri)[source]
Parameters:
Return type:

None

blankNode(uri=None)[source]
Parameters:

uri (Optional[str]) –

Return type:

BNode

checkDot(argstr, i)[source]
Parameters:

  • argstr (str) –

  • i (int) –

Return type:

int

commaSeparatedList(argstr, j, res, what)[source]

return value: -1 bad syntax; >1 new position in argstr res has things found appended

Parameters:
Return type:

int

directive(argstr, i)[source]
Parameters:

  • argstr (str) –

  • i (int) –

Return type:

int

directiveOrStatement(argstr, h)[source]
Parameters:

  • argstr (str) –

  • h (int) –

Return type:

int

endDoc()[source]

Signal end of document and stop parsing. returns formula

Return type:

Optional[Formula]

feed(octets)[source]

Feed an octet stream to the parser

if BadSyntax is raised, the string passed in the exception object is the remainder after any statements have been parsed. So if there is more data to feed to the parser, it should be straightforward to recover.

Parameters:

octets (Union[str, bytes]) –

Return type:

None

formula()[source]
Return type:

Optional[Formula]

here(i)[source]

String generated from position in file

This is for repeatability when referring people to bnodes in a document. This has diagnostic uses less formally, as it should point one to which bnode the arbitrary identifier actually is. It gives the line and character number of the ‘[’ charcacter or path character which introduced the blank node. The first blank node is boringly _L1C1. It used to be used only for tracking, but for tests in general it makes the canonical ordering of bnodes repeatable.

Parameters:

i (int) –

Return type:

str

item(argstr, i, res)[source]
Parameters:
Return type:

int

loadBuf(buf)[source]

Parses a buffer and returns its top level formula

Parameters:

buf (Union[str, bytes]) –

Return type:

Optional[Formula]

loadStream(stream)[source]
Parameters:

stream (Union[IO[str], IO[bytes]]) –

Return type:

Optional[Formula]

makeStatement(quadruple)[source]
Return type:

None

node(argstr, i, res, subjectAlready=None)[source]

Parse the <node> production. Space is now skipped once at the beginning instead of in multiple calls to self.skipSpace().

Parameters:
Return type:

int

nodeOrLiteral(argstr, i, res)[source]
Parameters:
Return type:

int

object(argstr, i, res)[source]
Parameters:
Return type:

int

objectList(argstr, i, res)[source]
Parameters:
Return type:

int

path(argstr, i, res)[source]

Parse the path production.

Parameters:
Return type:

int

prop(argstr, i, res)[source]
Parameters:
Return type:

int

property_list(argstr, i, subj)[source]

Parse property list Leaves the terminating punctuation in the buffer

Parameters:
Return type:

int

qname(argstr, i, res)[source]

xyz:def -> (‘xyz’, ‘def’) If not in keywords and keywordsSet: def -> (‘’, ‘def’) :def -> (‘’, ‘def’)

Parameters:
Return type:

int

setKeywords(k)[source]

Takes a list of strings

Parameters:

k (Optional[List[str]]) –

Return type:

None

skipSpace(argstr, i)[source]

Skip white space, newlines and comments. return -1 if EOF, else position of first non-ws character

Parameters:

  • argstr (str) –

  • i (int) –

Return type:

int

sparqlDirective(argstr, i)[source]

turtle and trig support BASE/PREFIX without @ and without terminating .

Parameters:

  • argstr (str) –

  • i (int) –

Return type:

int

sparqlTok(tok, argstr, i)[source]

Check for SPARQL keyword. Space must have been stripped on entry and we must not be at end of file. Case insensitive and not preceded by @

Parameters:
Return type:

int

startDoc()[source]
Return type:

None

statement(argstr, i)[source]
Parameters:

  • argstr (str) –

  • i (int) –

Return type:

int

strconst(argstr, i, delim)[source]

parse an N3 string constant delimited by delim. return index, val

Parameters:

  • argstr (str) –

  • i (int) –

  • delim (str) –

Return type:

Tuple[int, str]

subject(argstr, i, res)[source]
Parameters:
Return type:

int

tok(tok, argstr, i, colon=False)[source]

Check for keyword. Space must have been stripped on entry and we must not be at end of file.

if colon, then keyword followed by colon is ok (@prefix:<blah> is ok, rdf:type shortcut a must be followed by ws)

Parameters:
Return type:

int

uEscape(argstr, i, startline)[source]
Parameters:

  • argstr (str) –

  • i (int) –

  • startline (int) –

Return type:

Tuple[int, str]

uriOf(sym)[source]
Parameters:

sym (Union[Identifier, Tuple[str, str]]) –

Return type:

str

uri_ref2(argstr, i, res)[source]

Generate uri from n3 representation.

Note that the RDF convention of directly concatenating NS and local name is now used though I prefer inserting a ‘#’ to make the namesapces look more like what XML folks expect.

Parameters:
Return type:

int

variable(argstr, i, res)[source]

?abc -> variable(:abc)

Parameters:

  • argstr (str) –

  • i (int) –

Return type:

int

verb(argstr, i, res)[source]

has _prop_ is _prop_ of a = _prop_ >- prop -> <- prop -< _operator_

Parameters:
Return type:

int

class rdflib.plugins.parsers.notation3.TurtleParser[source]

Bases: Parser

An RDFLib parser for Turtle

See http://www.w3.org/TR/turtle/

__annotations__ = {}
__dict__ = mappingproxy({'__module__': 'rdflib.plugins.parsers.notation3', '__doc__': '\n    An RDFLib parser for Turtle\n\n    See http://www.w3.org/TR/turtle/\n    ', '__init__': <function TurtleParser.__init__>, 'parse': <function TurtleParser.parse>, '__dict__': <attribute '__dict__' of 'TurtleParser' objects>, '__weakref__': <attribute '__weakref__' of 'TurtleParser' objects>, '__annotations__': {}})
__init__()[source]
__module__ = 'rdflib.plugins.parsers.notation3'
__weakref__

list of weak references to the object (if defined)

parse(source, graph, encoding='utf-8', turtle=True)[source]
Parameters:
Return type:

None

rdflib.plugins.parsers.notation3.base()[source]

The base URI for this process - the Web equiv of cwd

Relative or absolute unix-standard filenames parsed relative to this yield the URI of the file. If we had a reliable way of getting a computer name, we should put it in the hostname just to prevent ambiguity

Return type:

str

rdflib.plugins.parsers.notation3.hexify(ustr)[source]

Use URL encoding to return an ASCII string corresponding to the given UTF8 string

>>> hexify("http://example/a b")
b'http://example/a%20b'
Parameters:

ustr (str) –

Return type:

bytes

rdflib.plugins.parsers.notation3.join(here, there)[source]

join an absolute URI and URI reference (non-ascii characters are supported/doctested; haven’t checked the details of the IRI spec though)

here is assumed to be absolute. there is URI reference.

>>> join('http://example/x/y/z', '../abc')
'http://example/x/abc'

Raise ValueError if there uses relative path syntax but here has no hierarchical path.

>>> join('mid:foo@example', '../foo') 
Traceback (most recent call last):
    raise ValueError(here)
ValueError: Base <mid:foo@example> has no slash
after colon - with relative '../foo'.

>>> join('http://example/x/y/z', '')
'http://example/x/y/z'

>>> join('mid:foo@example', '#foo')
'mid:foo@example#foo'

We grok IRIs

>>> len(u'Andr\xe9')
5

>>> join('http://example.org/', u'#Andr\xe9')
u'http://example.org/#Andr\xe9'
Parameters:

  • here (str) –

  • there (str) –

Return type:

str

rdflib.plugins.parsers.notation3.runNamespace()[source]

Returns a URI suitable as a namespace for run-local objects

Return type:

str

rdflib.plugins.parsers.notation3.splitFragP(uriref, punc=0)[source]

split a URI reference before the fragment

Punctuation is kept.

e.g.

>>> splitFragP("abc#def")
('abc', '#def')

>>> splitFragP("abcdef")
('abcdef', '')
Parameters:

  • uriref (str) –

  • punc (int) –

Return type:

Tuple[str, str]

rdflib.plugins.parsers.notation3.uniqueURI()[source]

A unique URI

Return type:

str

rdflib.plugins.parsers.nquads module

This is a rdflib plugin for parsing NQuad files into Conjunctive graphs that can be used and queried. The store that backs the graph must be able to handle contexts.

>>> from rdflib import ConjunctiveGraph, URIRef, Namespace
>>> g = ConjunctiveGraph()
>>> data = open("test/data/nquads.rdflib/example.nquads", "rb")
>>> g.parse(data, format="nquads") 
<Graph identifier=... (<class 'rdflib.graph.Graph'>)>
>>> assert len(g.store) == 449
>>> # There should be 16 separate contexts
>>> assert len([x for x in g.store.contexts()]) == 16
>>> # is the name of entity E10009 "Arco Publications"?
>>> #   (in graph http://bibliographica.org/entity/E10009)
>>> # Looking for:
>>> # <http://bibliographica.org/entity/E10009>
>>> #   <http://xmlns.com/foaf/0.1/name>
>>> #   "Arco Publications"
>>> #   <http://bibliographica.org/entity/E10009>
>>> s = URIRef("http://bibliographica.org/entity/E10009")
>>> FOAF = Namespace("http://xmlns.com/foaf/0.1/")
>>> assert(g.value(s, FOAF.name).eq("Arco Publications"))
class rdflib.plugins.parsers.nquads.NQuadsParser(sink=None, bnode_context=None)[source]

Bases: W3CNTriplesParser

Parameters:
__dict__ = mappingproxy({'__module__': 'rdflib.plugins.parsers.nquads', 'parse': <function NQuadsParser.parse>, 'parseline': <function NQuadsParser.parseline>, '__dict__': <attribute '__dict__' of 'NQuadsParser' objects>, '__weakref__': <attribute '__weakref__' of 'NQuadsParser' objects>, '__doc__': None, '__annotations__': {'sink': "Union[DummySink, 'NTGraphSink']", 'buffer': 'Optional[str]', 'file': 'Optional[Union[TextIO, codecs.StreamReader]]', 'line': 'Optional[str]'}})
__module__ = 'rdflib.plugins.parsers.nquads'
__weakref__

list of weak references to the object (if defined)

buffer: Optional[str]
file: Optional[Union[TextIO, codecs.StreamReader]]
line: Optional[str]
parse(inputsource, sink, bnode_context=None, **kwargs)[source]

Parse inputsource as an N-Quads file.

Parameters:
Return type:

ConjunctiveGraph

parseline(bnode_context=None)[source]
Parameters:

bnode_context (Optional[MutableMapping[str, BNode]]) –

Return type:

None

sink: Union[DummySink, 'NTGraphSink']

rdflib.plugins.parsers.ntriples module

N-Triples Parser License: GPL 2, W3C, BSD, or MIT Author: Sean B. Palmer, inamidst.com

class rdflib.plugins.parsers.ntriples.DummySink[source]

Bases: object

__dict__ = mappingproxy({'__module__': 'rdflib.plugins.parsers.ntriples', '__init__': <function DummySink.__init__>, 'triple': <function DummySink.triple>, '__dict__': <attribute '__dict__' of 'DummySink' objects>, '__weakref__': <attribute '__weakref__' of 'DummySink' objects>, '__doc__': None, '__annotations__': {}})
__init__()[source]
__module__ = 'rdflib.plugins.parsers.ntriples'
__weakref__

list of weak references to the object (if defined)

triple(s, p, o)[source]
class rdflib.plugins.parsers.ntriples.NTGraphSink(graph)[source]

Bases: object

Parameters:

graph (Graph) –

__init__(graph)[source]
Parameters:

graph (Graph) –

__module__ = 'rdflib.plugins.parsers.ntriples'
__slots__ = ('g',)
g
triple(s, p, o)[source]
Parameters:
Return type:

None

class rdflib.plugins.parsers.ntriples.NTParser[source]

Bases: Parser

parser for the ntriples format, often stored with the .nt extension

See http://www.w3.org/TR/rdf-testcases/#ntriples

__annotations__ = {}
__module__ = 'rdflib.plugins.parsers.ntriples'
__slots__ = ()
classmethod parse(source, sink, **kwargs)[source]

Parse the NT format

Parameters:

  • source (InputSource) – the source of NT-formatted data

  • sink (Graph) – where to send parsed triples

  • kwargs (Any) – Additional arguments to pass to .W3CNTriplesParser.parse

Return type:

None

class rdflib.plugins.parsers.ntriples.W3CNTriplesParser(sink=None, bnode_context=None)[source]

Bases: object

An N-Triples Parser. This is a legacy-style Triples parser for NTriples provided by W3C Usage:

p = W3CNTriplesParser(sink=MySink())
sink = p.parse(f) # file; use parsestring for a string

To define a context in which blank node identifiers refer to the same blank node across instances of NTriplesParser, pass the same dict as bnode_context to each instance. By default, a new blank node context is created for each instance of W3CNTriplesParser.

Parameters:
__annotations__ = {}
__init__(sink=None, bnode_context=None)[source]
Parameters:
__module__ = 'rdflib.plugins.parsers.ntriples'
__slots__ = ('_bnode_ids', 'sink', 'buffer', 'file', 'line')
buffer: Optional[str]
eat(pattern)[source]
Parameters:

pattern (Pattern[str]) –

Return type:

Match[str]

file: Union[TextIO, StreamReader, None]
line: Optional[str]
literal()[source]
Return type:

Union[Literal[False], Literal]

nodeid(bnode_context=None)[source]
Parameters:

bnode_context (Optional[MutableMapping[str, BNode]]) –

Return type:

Union[Literal[False], BNode]

object(bnode_context=None)[source]
Parameters:

bnode_context (Optional[MutableMapping[str, BNode]]) –

Return type:

Union[URIRef, BNode, Literal]

parse(f, bnode_context=None)[source]

Parse f as an N-Triples file.

Parameters:

  • f (Union[TextIO, IO[bytes], StreamReader]) – the N-Triples source

  • bnode_context (Optional[MutableMapping[str, BNode]]) – a dict mapping blank node identifiers (e.g., a in _:a) to ~rdflib.term.BNode instances. An empty dict can be passed in to define a distinct context for a given call to parse.

Return type:

Union[DummySink, NTGraphSink]

parseline(bnode_context=None)[source]
Parameters:

bnode_context (Optional[MutableMapping[str, BNode]]) –

Return type:

None

parsestring(s, **kwargs)[source]

Parse s as an N-Triples string.

Parameters:

s (Union[bytes, bytearray, str]) –

Return type:

None

peek(token)[source]
Parameters:

token (str) –

Return type:

bool

predicate()[source]
Return type:

URIRef

readline()[source]

Read an N-Triples line from buffered input.

Return type:

Optional[str]

sink: Union[DummySink, NTGraphSink]
subject(bnode_context=None)[source]
Return type:

Union[BNode, URIRef]

uriref()[source]
Return type:

Union[Literal[False], URIRef]

rdflib.plugins.parsers.ntriples.unquote(s)[source]

Unquote an N-Triples string.

Parameters:

s (str) –

Return type:

str

rdflib.plugins.parsers.ntriples.uriquote(uri)[source]
Parameters:

uri (str) –

Return type:

str

rdflib.plugins.parsers.rdfxml module

An RDF/XML parser for RDFLib

class rdflib.plugins.parsers.rdfxml.BagID(value: str, base: str | None = None)[source]

Bases: URIRef

__annotations__ = {}
__init__(val)[source]
__module__ = 'rdflib.plugins.parsers.rdfxml'
__slots__ = ['li']
li
next_li()[source]
class rdflib.plugins.parsers.rdfxml.ElementHandler[source]

Bases: object

__init__()[source]
__module__ = 'rdflib.plugins.parsers.rdfxml'
__slots__ = ['start', 'char', 'end', 'li', 'id', 'base', 'subject', 'predicate', 'object', 'list', 'language', 'datatype', 'declared', 'data']
base
char
data
datatype
declared
end
id
language
li
list
next_li()[source]
object
predicate
start
subject
class rdflib.plugins.parsers.rdfxml.RDFXMLHandler(store)[source]

Bases: ContentHandler

Parameters:

store (Graph) –

__init__(store)[source]
Parameters:

store (Graph) –

__module__ = 'rdflib.plugins.parsers.rdfxml'
absolutize(uri)[source]
Parameters:

uri (str) –

Return type:

URIRef

add_reified(sid, spo)[source]
Parameters:
characters(content)[source]

Receive notification of character data.

The Parser will call this method to report each chunk of character data. SAX parsers may return all contiguous character data in a single chunk, or they may split it into several chunks; however, all of the characters in any single event must come from the same external entity so that the Locator provides useful information.

Parameters:

content (str) –

Return type:

None

convert(name, qname, attrs)[source]
Parameters:
Return type:

Tuple[URIRef, Dict[URIRef, str]]

property current: ElementHandler | None
document_element_start(name, qname, attrs)[source]
Parameters:
Return type:

None

endElementNS(name, qname)[source]

Signals the end of an element in namespace mode.

The name parameter contains the name of the element type, just as with the startElementNS event.

Parameters:

name (Tuple[Optional[str], str]) –

Return type:

None

endPrefixMapping(prefix)[source]

End the scope of a prefix-URI mapping.

See startPrefixMapping for details. This event will always occur after the corresponding endElement event, but the order of endPrefixMapping events is not otherwise guaranteed.

Parameters:

prefix (Optional[str]) –

Return type:

None

error(message)[source]
Parameters:

message (str) –

Return type:

NoReturn

get_current()[source]
Return type:

Optional[ElementHandler]

get_next()[source]
Return type:

Optional[ElementHandler]

get_parent()[source]
Return type:

Optional[ElementHandler]

ignorableWhitespace(content)[source]

Receive notification of ignorable whitespace in element content.

Validating Parsers must use this method to report each chunk of ignorable whitespace (see the W3C XML 1.0 recommendation, section 2.10): non-validating parsers may also use this method if they are capable of parsing and using content models.

SAX parsers may return all contiguous whitespace in a single chunk, or they may split it into several chunks; however, all of the characters in any single event must come from the same external entity, so that the Locator provides useful information.

Return type:

None

list_node_element_end(name, qname)[source]
Parameters:

name (Tuple[str, str]) –

Return type:

None

literal_element_char(data)[source]
Parameters:

data (str) –

Return type:

None

literal_element_end(name, qname)[source]
Parameters:

name (Tuple[str, str]) –

Return type:

None

literal_element_start(name, qname, attrs)[source]
Parameters:
Return type:

None

property next: ElementHandler | None
node_element_end(name, qname)[source]
Parameters:

name (Tuple[str, str]) –

Return type:

None

node_element_start(name, qname, attrs)[source]
Parameters:
Return type:

None

property parent: ElementHandler | None
processingInstruction(target, data)[source]

Receive notification of a processing instruction.

The Parser will invoke this method once for each processing instruction found: note that processing instructions may occur before or after the main document element.

A SAX parser should never report an XML declaration (XML 1.0, section 2.8) or a text declaration (XML 1.0, section 4.3.1) using this method.

Return type:

None

property_element_char(data)[source]
Parameters:

data (str) –

Return type:

None

property_element_end(name, qname)[source]
Parameters:

name (Tuple[str, str]) –

Return type:

None

property_element_start(name, qname, attrs)[source]
Parameters:
Return type:

None

reset()[source]
Return type:

None

setDocumentLocator(locator)[source]

Called by the parser to give the application a locator for locating the origin of document events.

SAX parsers are strongly encouraged (though not absolutely required) to supply a locator: if it does so, it must supply the locator to the application by invoking this method before invoking any of the other methods in the DocumentHandler interface.

The locator allows the application to determine the end position of any document-related event, even if the parser is not reporting an error. Typically, the application will use this information for reporting its own errors (such as character content that does not match an application’s business rules). The information returned by the locator is probably not sufficient for use with a search engine.

Note that the locator will return correct information only during the invocation of the events in this interface. The application should not attempt to use it at any other time.

Parameters:

locator (Locator) –

startDocument()[source]

Receive notification of the beginning of a document.

The SAX parser will invoke this method only once, before any other methods in this interface or in DTDHandler (except for setDocumentLocator).

Return type:

None

startElementNS(name, qname, attrs)[source]

Signals the start of an element in namespace mode.

The name parameter contains the name of the element type as a (uri, localname) tuple, the qname parameter the raw XML 1.0 name used in the source document, and the attrs parameter holds an instance of the Attributes class containing the attributes of the element.

The uri part of the name tuple is None for elements which have no namespace.

Parameters:
Return type:

None

startPrefixMapping(prefix, namespace)[source]

Begin the scope of a prefix-URI Namespace mapping.

The information from this event is not necessary for normal Namespace processing: the SAX XML reader will automatically replace prefixes for element and attribute names when the http://xml.org/sax/features/namespaces feature is true (the default).

There are cases, however, when applications need to use prefixes in character data or in attribute values, where they cannot safely be expanded automatically; the start/endPrefixMapping event supplies the information to the application to expand prefixes in those contexts itself, if necessary.

Note that start/endPrefixMapping events are not guaranteed to be properly nested relative to each-other: all startPrefixMapping events will occur before the corresponding startElement event, and all endPrefixMapping events will occur after the corresponding endElement event, but their order is not guaranteed.

Parameters:
Return type:

None

class rdflib.plugins.parsers.rdfxml.RDFXMLParser[source]

Bases: Parser

__annotations__ = {}
__dict__ = mappingproxy({'__module__': 'rdflib.plugins.parsers.rdfxml', '__init__': <function RDFXMLParser.__init__>, 'parse': <function RDFXMLParser.parse>, '__dict__': <attribute '__dict__' of 'RDFXMLParser' objects>, '__weakref__': <attribute '__weakref__' of 'RDFXMLParser' objects>, '__doc__': None, '__annotations__': {}})
__init__()[source]
__module__ = 'rdflib.plugins.parsers.rdfxml'
__weakref__

list of weak references to the object (if defined)

parse(source, sink, **args)[source]
Parameters:
Return type:

None

rdflib.plugins.parsers.rdfxml.create_parser(target, store)[source]
Parameters:
Return type:

XMLReader

rdflib.plugins.parsers.trig module

class rdflib.plugins.parsers.trig.TrigParser[source]

Bases: Parser

An RDFLib parser for TriG

__annotations__ = {}
__dict__ = mappingproxy({'__module__': 'rdflib.plugins.parsers.trig', '__doc__': '\n    An RDFLib parser for TriG\n\n    ', '__init__': <function TrigParser.__init__>, 'parse': <function TrigParser.parse>, '__dict__': <attribute '__dict__' of 'TrigParser' objects>, '__weakref__': <attribute '__weakref__' of 'TrigParser' objects>, '__annotations__': {}})
__init__()[source]
__module__ = 'rdflib.plugins.parsers.trig'
__weakref__

list of weak references to the object (if defined)

parse(source, graph, encoding='utf-8')[source]
Parameters:
Return type:

None

class rdflib.plugins.parsers.trig.TrigSinkParser(store, openFormula=None, thisDoc='', baseURI=None, genPrefix='', why=None, turtle=False)[source]

Bases: SinkParser

Parameters:
__annotations__ = {}
__module__ = 'rdflib.plugins.parsers.trig'
directiveOrStatement(argstr, h)[source]
Parameters:

  • argstr (str) –

  • h (int) –

Return type:

int

graph(argstr, i)[source]

Parse trig graph, i.e.

<urn:graphname> = { .. triples .. }

return -1 if it doesn’t look like a graph-decl raise Exception if it looks like a graph, but isn’t.

Parameters:

  • argstr (str) –

  • i (int) –

Return type:

int

labelOrSubject(argstr, i, res)[source]
Parameters:
Return type:

int

rdflib.plugins.parsers.trig.becauseSubGraph(*args, **kwargs)[source]

rdflib.plugins.parsers.trix module

A TriX parser for RDFLib

class rdflib.plugins.parsers.trix.TriXHandler(store)[source]

Bases: ContentHandler

An Sax Handler for TriX. See http://sw.nokia.com/trix/

Parameters:

store (Store) –

__annotations__ = {}
__init__(store)[source]
Parameters:

store (Store) –

__module__ = 'rdflib.plugins.parsers.trix'
characters(content)[source]

Receive notification of character data.

The Parser will call this method to report each chunk of character data. SAX parsers may return all contiguous character data in a single chunk, or they may split it into several chunks; however, all of the characters in any single event must come from the same external entity so that the Locator provides useful information.

Parameters:

content (str) –

Return type:

None

endElementNS(name, qname)[source]

Signals the end of an element in namespace mode.

The name parameter contains the name of the element type, just as with the startElementNS event.

Parameters:

name (Tuple[Optional[str], str]) –

Return type:

None

endPrefixMapping(prefix)[source]

End the scope of a prefix-URI mapping.

See startPrefixMapping for details. This event will always occur after the corresponding endElement event, but the order of endPrefixMapping events is not otherwise guaranteed.

Parameters:

prefix (Optional[str]) –

Return type:

None

error(message)[source]
Parameters:

message (str) –

Return type:

NoReturn

get_bnode(label)[source]
Parameters:

label (str) –

Return type:

BNode

ignorableWhitespace(content)[source]

Receive notification of ignorable whitespace in element content.

Validating Parsers must use this method to report each chunk of ignorable whitespace (see the W3C XML 1.0 recommendation, section 2.10): non-validating parsers may also use this method if they are capable of parsing and using content models.

SAX parsers may return all contiguous whitespace in a single chunk, or they may split it into several chunks; however, all of the characters in any single event must come from the same external entity, so that the Locator provides useful information.

Return type:

None

processingInstruction(target, data)[source]

Receive notification of a processing instruction.

The Parser will invoke this method once for each processing instruction found: note that processing instructions may occur before or after the main document element.

A SAX parser should never report an XML declaration (XML 1.0, section 2.8) or a text declaration (XML 1.0, section 4.3.1) using this method.

Return type:

None

reset()[source]
Return type:

None

setDocumentLocator(locator)[source]

Called by the parser to give the application a locator for locating the origin of document events.

SAX parsers are strongly encouraged (though not absolutely required) to supply a locator: if it does so, it must supply the locator to the application by invoking this method before invoking any of the other methods in the DocumentHandler interface.

The locator allows the application to determine the end position of any document-related event, even if the parser is not reporting an error. Typically, the application will use this information for reporting its own errors (such as character content that does not match an application’s business rules). The information returned by the locator is probably not sufficient for use with a search engine.

Note that the locator will return correct information only during the invocation of the events in this interface. The application should not attempt to use it at any other time.

Parameters:

locator (Locator) –

startDocument()[source]

Receive notification of the beginning of a document.

The SAX parser will invoke this method only once, before any other methods in this interface or in DTDHandler (except for setDocumentLocator).

Return type:

None

startElementNS(name, qname, attrs)[source]

Signals the start of an element in namespace mode.

The name parameter contains the name of the element type as a (uri, localname) tuple, the qname parameter the raw XML 1.0 name used in the source document, and the attrs parameter holds an instance of the Attributes class containing the attributes of the element.

The uri part of the name tuple is None for elements which have no namespace.

Parameters:
Return type:

None

startPrefixMapping(prefix, namespace)[source]

Begin the scope of a prefix-URI Namespace mapping.

The information from this event is not necessary for normal Namespace processing: the SAX XML reader will automatically replace prefixes for element and attribute names when the http://xml.org/sax/features/namespaces feature is true (the default).

There are cases, however, when applications need to use prefixes in character data or in attribute values, where they cannot safely be expanded automatically; the start/endPrefixMapping event supplies the information to the application to expand prefixes in those contexts itself, if necessary.

Note that start/endPrefixMapping events are not guaranteed to be properly nested relative to each-other: all startPrefixMapping events will occur before the corresponding startElement event, and all endPrefixMapping events will occur after the corresponding endElement event, but their order is not guaranteed.

Parameters:
Return type:

None

class rdflib.plugins.parsers.trix.TriXParser[source]

Bases: Parser

A parser for TriX. See http://sw.nokia.com/trix/

__annotations__ = {}
__dict__ = mappingproxy({'__module__': 'rdflib.plugins.parsers.trix', '__doc__': 'A parser for TriX. See http://sw.nokia.com/trix/', '__init__': <function TriXParser.__init__>, 'parse': <function TriXParser.parse>, '__dict__': <attribute '__dict__' of 'TriXParser' objects>, '__weakref__': <attribute '__weakref__' of 'TriXParser' objects>, '__annotations__': {}})
__init__()[source]
__module__ = 'rdflib.plugins.parsers.trix'
__weakref__

list of weak references to the object (if defined)

parse(source, sink, **args)[source]
Parameters:
Return type:

None

rdflib.plugins.parsers.trix.create_parser(store)[source]
Parameters:

store (Store) –

Return type:

XMLReader

Module contents