colour.COLOURSPACE_MODELS_POLAR_CONVERSIONS

colour.COLOURSPACE_MODELS_POLAR_CONVERSIONS = (('hdr_CIELab', 'hdr_CIELCHab'), ('hdr_IPT', 'hdr_ICH'), ('Hunter_Lab', 'Hunter_LCHab'), ('Hunter_Rdab', 'Hunter_RdCHab'), ('ICaCb', 'ICHab'), ('ICtCp', 'ICHtp'), ('IPT', 'ICH'), ('IPT_Ragoo2021', 'ICH_Ragoo2021'), ('IgPgTg', 'IgCHpt'), ('Izazbz', 'IzCHab'), ('Jzazbz', 'JzCHab'), ('Lab', 'LCHab'), ('Luv', 'LCHuv'), ('Oklab', 'Oklch'), ('ProLab', 'ProLCHab'), ('sUCS', 'sUCSICH'))

Built-in immutable sequence.

If no argument is given, the constructor returns an empty tuple. If iterable is specified the tuple is initialized from iterable’s items.

If the argument is a tuple, the return value is the same object.