Bug summary

A minor bug, with a simple fix: mpl.colormaps[ "Grays" ].name is "Greys", not "Greys"

Code for reproduction

print( f'{mpl.colormaps[ "Grays" ].name = }' )  # Greys

Actual outcome

mpl.colormaps[ "Grays" ].name = 'Greys'

Expected outcome

mpl.colormaps[ "Grays" ].name = 'Grays'

Additional information

A suggested fix: in cm.py, after lines 47 - 50

# Register colormap aliases for gray and grey.
cmap_d['grey'] = cmap_d['gray']
cmap_d['gist_grey'] = cmap_d['gist_gray']
cmap_d['gist_yerg'] = cmap_d['gist_yarg']
cmap_d['Grays'] = cmap_d['Greys']

change their .name s too:

cmap_d['grey'].name = 'grey'
cmap_d['gist_grey'].name = 'gist_grey'
cmap_d['gist_yerg'].name = 'gist_yerg'
cmap_d['Grays'].name = 'Grays'

Operating system

macos 10.15.7

Matplotlib Version

3.8.4

Matplotlib Backend

No response

Python version

3.10.0

Jupyter version

No response

Installation

pip