Serhiy Storchaka added the comment: It matches error messages generated by builtin unbound methods.
>>> str.format() Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: descriptor 'format' of 'str' object needs an argument It would be incorrect to say "substitute method wants x y z", because the substitute method doesn't need any arguments. >>> string.Template('spam').substitute() 'spam' ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue23671> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com