New submission from Serhiy Storchaka: BytesWarning can be raised during compilation.
$ ./python -Wa -b -c "lambda: 'a'; lambda: b'a'" sys:1: BytesWarning: Comparison between bytes and string sys:1: BytesWarning: Comparison between bytes and string sys:1: BytesWarning: Comparison between bytes and string sys:1: BytesWarning: Comparison between bytes and string _PyCode_ConstantKey() should produce keys that don't allow comparing bytes with strings nested in tuples or frozensets. Currently it returns (tuple, ('a',), ((str, 'a'),)) for ('a',) and (tuple, (b'a',), ((bytes, b'a'),)) for (b'a',). Key tuples have the same size and the same first element. Comparing second elements emits a BytesWarning. ---------- components: Interpreter Core messages: 285940 nosy: haypo, inada.naoki, serhiy.storchaka priority: normal severity: normal status: open title: BytesWarning at compile time type: behavior versions: Python 3.5, Python 3.6, Python 3.7 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue29337> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com