[issue42630] Variable.__init__ raise a RuntimeError instead of obscure AttributeError

Ivo Shipkaliev added the comment: https://mail.python.org/archives/list/python-id...@python.org/thread/FSQUFJJQDNSRN4HI7VFXWCNO46YLXQDS/ -- ___ Python tracker ___

[issue42630] Variable.__init__ raise a RuntimeError instead of obscure AttributeError

New submission from Ivo Shipkaliev : Hello. I think it would be nice to add: 335 > if not master: 336 > raise RuntimeError('a valid Tk instance is required.') to lib/tkinter/__init__.py, and not rely on this unclear AttributeError. Could it be assigned to me, plea