`jsonschema._format.is_css_color_code` and `jsonschema._format.is_css21_color` never exist if the latest version of `webcolors` is installed

[AlexWaygood]

(This issue isn't a complaint, just an FYI!)

The following block of code will always raise ImportError if you have the latest version of webcolors installed, meaning that the contextlib.suppress block will always exit immediately, and these functions will never be defined; the block is now essentially dead code:

jsonschema/jsonschema/_format.py

Lines 415 to 429 in 0024b58

	with suppress(ImportError):
	from webcolors import CSS21_NAMES_TO_HEX
	import webcolors
	def is_css_color_code(instance: object) -> bool:
	return webcolors.normalize_hex(instance)
	@_checks_drafts(draft3="color", raises=(ValueError, TypeError))
	def is_css21_color(instance: object) -> bool:
	if (
	not isinstance(instance, str)
	or instance.lower() in CSS21_NAMES_TO_HEX
	):
	return True
	return is_css_color_code(instance)

This is because webcolors made the CSS21_NAMES_TO_HEX constant private in webcolors==24.6.0 (released on June 6), so the statement from webcolors import CSS21_NAMES_TO_HEX now always raises ImportError. The diff between the latest version of webcolors and the release before it can be seen here: ubernostrum/webcolors@1.13...24.6.0.

Obviously third parties should not be relying on any functions in the internal _format module, so this isn't a complaint! But we spotted this in typeshed's CI, and thought you might like to know.

[Julian]

Thanks! Indeed good to know, will have a look. Appreciated!

[Julian]

Should be fixed in the next release, thanks again.