New submission from Gerrit Holl <topjakl...@gmail.com>: When accidentally passing a string to warnings.warn where one should pass a Warning-class, the error message is rather confusing:
$ ./python Python 2.7.1+ (release27-maint:88766, Mar 8 2011, 16:51:59) [GCC 4.4.5] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import warnings >>> warnings.warn("aaa", "bbb") Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: issubclass() arg 1 must be a class It would be better for the error message to say TypeError: warnings must be classes inherited from ... or something like that. ---------- components: Interpreter Core, Library (Lib) messages: 130800 nosy: Gerrit.Holl priority: normal severity: normal status: open title: Confusing error message from warnings.warn type: behavior versions: Python 2.7 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue11494> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com