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Author pekka.klarck
Recipients pekka.klarck
Date 2017-01-19.18:55:38
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Message-id <>
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 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())

Assuming this is fixed, should probably note that with Python 3 you actually *need* to implement `__index__` and `__hex__` has no effect.
Date User Action Args
2017-01-19 18:55:38pekka.klarcksetrecipients: + pekka.klarck
2017-01-19 18:55:38pekka.klarcksetmessageid: <>
2017-01-19 18:55:38pekka.klarcklinkissue29329 messages
2017-01-19 18:55:38pekka.klarckcreate