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
20841	NotImplementedErrors should provide exception messages	joseph@…	Tim Clifford	"The Django source has many occurrences of NotImplementedErrors raised without a message. For example, if a dev creates a class inheriting from contrib.admin.SimpleListFilter and does not provide a lookups() method, all they see from the Debug template is ""NotImplementedError at /path/to/file/ No exception supplied"". This, in my opinion, makes seeking help difficult for those not comfortable enough to dig through the Django source. A simple message such as ""instances of SimpleListFilter must provide a lookups() method"" provides instant feedback and a non-ambiguous means to seeking help if needed. 

In short, my request is to have all NotImplementedError exceptions raised accompanied by a message. 

I realize this change would be boring to work on, so I am more than willing to read through the patch procedures and submit a patch myself if you all find this a worthy cause. (The nature of this request may even be simple enough to send through Github)"	Cleanup/optimization	closed	Core (Other)	dev	Normal	fixed	NotImplementedError	joseph@…	Accepted	1	0	0	0	1	0