Section Navigation
Data structures and transformations
astropy.constants
astropy.units
astropy.nddata
astropy.table
astropy.time
astropy.timeseries
astropy.coordinates
astropy.wcs
astropy.modeling
astropy.uncertainty
Files, I/O, and Communication
astropy.io.fits
astropy.io.ascii
astropy.io.votable
astropy.io.misc
astropy.io.typing
astropy.samp
Computations and utilities
astropy.cosmology
astropy.convolution
astropy.utils.iers
astropy.visualization
astropy.stats
Nuts and bolts
astropy.config
astropy.io.registry
astropy.utils
The base class for unit-specific exceptions.