Steven D'Aprano added the comment: Can confirm the expected behaviour (printing True) in Python 2.4 through 2.7, 3.3, Jython 2.5, and even venerable old Python 1.5 (where it prints 1).
But *not* IronPython 2.6, where it prints False. In 3.6, the difference seems to be here: py> f = defaultKeepsIdentity py> f.__defaults__[0] is f.__code__.co_consts[1] False py> f.__defaults__[0] == f.__code__.co_consts[1] True This behaviour is not specified by the language. Caching and re-use of strings has always been subject to change. Nevertheless, perhaps it is time for this to be make a language feature: inside a function, any use of the same string literal should use the same object? ---------- nosy: +steven.daprano _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue27942> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
