`plotly.colors.validate_colors` fails for valid colors and passes for invalid colors

This function raises a PlotlyError for color formats that are valid within traces, but also does not raise errors for color formats that are not valid.

Example of a valid color string that does not pass: color = 'hsl(290, 100%, 50%)'. This works perfectly fine if you construct a trace with it, but fails the validation test because it does not contain "rgb" or "#".

import plotly.graph_objects as go
import plotly.colors as pc

color = 'hsl(290, 100%, 50%)'

# this works
trace = go.Scatter(x=[0], y=[0], marker=dict(color=color))
fig = go.Figure(trace)
fig.show()

# this does not
pc.validate_colors(color)  # this throws an error

Other cases:

• A valid, named color string throws an error
• The same named color within a list does not throw an error
• An invalid named color within a list does not throw an error, but it should

Examples below

import plotly.colors as pc

pc.validate_colors('red')  # throws PlotlyError

pc.validate_colors(['red'])
>>> ['red']

pc.validate_colors(['asdflkjlaskdg'])
>>> ['asdflkjlaskdg']

Perhaps this function is not meant to be used in this way? If so then more information in the docstrings could be helpful.

Plotly version 5.24.1.

Commencez au point d’entrée plotly.colors.validate_colors et reproduisez les exemples HSL, named-color, valid-list et invalid-list de l’issue. Suivez la manière dont les entrées scalaires et les listes sont validées. Le travail est terminé lorsque les couleurs valides prises en charge par les traces sont acceptées, que les couleurs invalides sont rejetées de manière cohérente et que l’utilisation prévue de la fonction est claire dans sa documentation.