id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
32285	AppConfig.label should raise an exception when it's not a valid Python identifier.	Federico Capoano	Hasan Ramezani	"Follow up to [https://groups.google.com/g/django-developers/c/3cbMviLrSzI/m/KEXlMDD3AAAJ mailing list discussion].

Setting the `app_label` of an `AppConfig` object is allowed and fails later on during migrations (`./manage.py migrate`) with `(too many values to unpack)`.
It took me a couple of minutes to figure out what was wrong, but it may not be so obvious to an inexperienced user so it may be better to raise a clearer exception.

Maybe we can use system checks and fail earlier if such a problem is detected?"	Cleanup/optimization	closed	Core (Other)	3.1	Normal	fixed			Ready for checkin	1	0	0	0	1	0