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Getting Started
User Guide
Development
Project details
Tutorials

GitHub

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Data structures and transformations

Constants (astropy.constants)
Units and Quantities (astropy.units)
N-Dimensional Datasets (astropy.nddata)
Data Tables (astropy.table)
Time and Dates (astropy.time)
- Reference/API
Time Series (astropy.timeseries)
Astronomical Coordinate Systems (astropy.coordinates)
World Coordinate System (astropy.wcs)
Models and Fitting (astropy.modeling)
Uncertainties and Distributions (astropy.uncertainty)

Files, I/O, and Communication

Unified File Read/Write Interface
FITS File Handling (astropy.io.fits)
ASCII Tables (astropy.io.ascii)
VOTable XML Handling (astropy.io.votable)
Miscellaneous: HDF5, YAML, Parquet, pickle (astropy.io.misc)
SAMP (Simple Application Messaging Protocol) (astropy.samp)

Computations and utilities

Cosmological Calculations (astropy.cosmology)
Convolution and Filtering (astropy.convolution)
IERS data access (astropy.utils.iers)
Data Visualization (astropy.visualization)
Astrostatistics Tools (astropy.stats)

Nuts and bolts

Configuration System (astropy.config)
I/O Registry (astropy.io.registry)
Logging system
Python warnings system
Astropy Core Package Utilities (astropy.utils)
Astropy Glossary

User Guide
Reference/API
TimeDeltaMis...

TimeDeltaMissingUnitWarning#

exception astropy.time.TimeDeltaMissingUnitWarning[source]#: Warning for missing unit or format in TimeDelta.

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