[issue42418] PyType_GetModule() should warn/fail when type has Py_TPFLAGS_BASETYPE

[hai shi]

hai shi <shihai1991 at 126.com> added the comment:

>I propose to either a guard to PyType_GetModule() to prevent misuse of the function or to add a variant of the function that prevents misuse.
+1. Looks like check Py_TPFLAGS_BASETYPE in PyType_GetModule() is an easy way:)

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nosy: +shihai1991

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue42418>
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