complete the API of plotly.colors and plotly.express.colors

[emmanuelle]

API exposed:

[jonmmease]

Thanks @emmanuelle! In terms of the imports, I think we also need to add these to the __all__ lists:

• plotlyjs
• DEFAULT_PLOTLY_COLORS
• PLOTLY_SCALES

I don't feel strongly that these need to be in the documentation, just that imports keep working.

[emmanuelle]

@jonmmease done! Lists do not appear in the sphinx documentation and I did not do the copy thing for the plotlyjs module so this does not change the API doc. But of course now the objects can be imported both from plotly.colors and px.colors.

[nicolaskruchten]

💃 !

It would be nice to clean up the docstrings in these functions a bit, maybe when we do #2484 ... I can't tell if any of these functions actually already do this!