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User Guide
Contributing
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Getting Started
User Guide
Contributing
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)
Time Series (astropy.timeseries)
Astronomical Coordinate Systems (astropy.coordinates)
World Coordinate System (astropy.wcs)
Models and Fitting (astropy.modeling)
Uncertainties and Distributions (astropy.uncertainty)

File I/O

Overview of Astropy File I/O
High-level Unified File I/O

FITS File Handling (astropy.io.fits)
Text Tables (astropy.io.ascii)
VOTable Handling (astropy.io.votable)
Miscellaneous: HDF5, YAML, Parquet, pickle (astropy.io.misc)

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)
SAMP (Simple Application Messaging Protocol) (astropy.samp)

Nuts and bolts

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

User Guide
Models and Fitting (astropy.modeling)
Reference/API
ModelDefinitionError

ModelDefinitionError#

exception astropy.modeling.ModelDefinitionError[source]#: Used for incorrect models definitions.

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