Alex Waygood <alex.wayg...@gmail.com> added the comment:
This same bug (where classmethod properties are accidentally called by other
parts of Python) is also present for non-abstract class properties, and has the
side effect of causing doctest.py to crash with a fairly incomprehensible
`AttributeError`:
Script:
class Untestable:
"""
>>> Untestable.my_classmethod_property
'Oh no!'
"""
@classmethod
@property
def my_classmethod_property(cls):
return 'Oh no!'
if __name__ == '__main__':
import doctest
doctest.testmod()
Output:
Traceback (most recent call last):
File "C:/Users/Alex/classmethod_properties_bug.py", line 13, in <module>
doctest.testmod()
File "C:\Users\Alex\.conda\envs\WebGame39\lib\doctest.py", line 1955, in
testmod
for test in finder.find(m, name, globs=globs, extraglobs=extraglobs):
File "C:\Users\Alex\.conda\envs\WebGame39\lib\doctest.py", line 939, in
find
self._find(tests, obj, name, module, source_lines, globs, {})
File "C:\Users\Alex\.conda\envs\WebGame39\lib\doctest.py", line 1001, in
_find
self._find(tests, val, valname, module, source_lines,
File "C:\Users\Alex\.conda\envs\WebGame39\lib\doctest.py", line 1028, in
_find
val = getattr(obj, valname).__func__
AttributeError: 'str' object has no attribute '__func__'
----------
nosy: +AlexWaygood
Added file: https://bugs.python.org/file50218/classmethod_properties_bug.py
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue44904>
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