Help strings incorrectly considered missing for some but not all trait types

[consideRatio]

It seems that the help strings for traits of type Dict, List, Instance are missing since ipython/traitlets#818 released with traitlets 5.10.0 in september, but they aren't missing for Bool, Integer, Unicode.

I've added a test to capture this in #54, but I don't have an understanding on what happened in ipython/traitlets#818 that caused this.

Related code

autodoc-traits/autodoc_traits.py

Lines 92 to 122 in 5632a2a

	config_trait_members = self.object.class_traits(config=True).items()
	for trait_tuple in config_trait_members:
	name, trait = trait_tuple
	if not trait.__doc__:
	warnings.warn(
	f"""
	Documenting {self.object.__name__}.{trait.name} without a help string because it has config=True.
	Including undocumented config=True traits is deprecated in autodoc-traits 1.1.
	Add a help string:
	{trait.name} = {trait.__class__.__name__}(
	help="...",
	)
	to keep this trait in your docs,
	or include it explicitly via :members:
	""",
	FutureWarning,
	)
	# FIXME: in the unlikely event that the patched trait
	# is documented multiple times in the same build,
	# this patch will cause it to have a truthy help string
	# elsewhere, not just in this autoconfigurable instance.
	trait.__doc__ = trait.help = "No help string is provided."
	if name not in existing_member_names:
	existing_member_names.add(name)
	members.append(ObjectMember(name, trait))
	return check, members

[consideRatio]

I've tested to conlclude that we run into this issue not only with the main branch of autodoc_traits, but with version 1.1.0, as long as traitlets with ipython/traitlets#818 is used.

[consideRatio]

Fixed in traitlets 5.10.1