How to use recent ColourChecker related code?

[juneleung]

Question

Hello,
I run a code with

bca = colour.COLOURCHECKERS['BabelColor Average']
colour.COLOURCHECKERS['CIE 1931'] = colour.characterisation.ColourChecker(name='CIE 1931', data = bca.data, illuminant = bca.illuminant)

and get the error that

AttributeError: module 'colour' has no attribute 'COLOURCHECKERS'

, and I fixed the code to

bca = colour.**SDS_**COLOURCHECKERS['BabelColor Average']

and get the error that

AttributeError: 'LazyCanonicalMapping' object has no attribute '**illuminant**'

I guess it may be due to the code is from the old color library version, what is the 'illuminant' in the 'LazyCanonicalMapping' in the new library cause I can't find it in the source code? Thanks!

[KelSolaar]

Hi @juneleung,

You are indeed using a rather old version of colour! The code should now be:

import colour

bca = colour.CCS_COLOURCHECKERS["BabelColor Average"]
colour.CCS_COLOURCHECKERS["CIE 1931"] = colour.characterisation.ColourChecker(
    name="CIE 1931", data=bca.data, illuminant=bca.illuminant, rows=6, columns=4
)