New submission from Pekka Klärck: Documentation of `hex()` on Python 2 says that custom objects need to implement `__index__` to support it. Based on my tests that doesn't work but `__hex__` is needed instead. Docs are at https://docs.python.org/2/library/functions.html?highlight=hex#hex and here's an example session:
Python 2.7.6 (default, Oct 26 2016, 20:30:19) [GCC 4.8.4] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> class Hex(object): ... def __index__(self): ... return 255 ... >>> hex(Hex()) Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: hex() argument can't be converted to hex >>> >>> class Hex(object): ... def __hex__(self): ... return hex(255) ... >>> hex(Hex()) '0xff' Assuming this is fixed, should probably note that with Python 3 you actually *need* to implement `__index__` and `__hex__` has no effect. ---------- messages: 285832 nosy: pekka.klarck priority: normal severity: normal status: open title: Incorrect documentation for custom `hex()` support on Python 2 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue29329> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
