Message201024
When __getattr__ is implemented without also implementing __copy__ and __deepcopy__ trying to (deep)copy the class fails.
>>> import copy
>>> class foo():
... def __getattr__(self, attr):
... return None
...
>>> f = foo()
>>> copy(f)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: 'module' object is not callable
The copy module checks if a class has implemented __copy__ using hasattr:
if hasattr(x, '__copy__'):
...
An easy fix would be to use:
if getattr(x, '__copy__', None):
...
In Python 3 this change has already been made. |
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Date |
User |
Action |
Args |
2013-10-23 13:49:43 | Kassym.Dorsel | set | recipients:
+ Kassym.Dorsel, alexandre.vassalotti |
2013-10-23 13:49:43 | Kassym.Dorsel | set | messageid: <1382536183.12.0.651276140754.issue19364@psf.upfronthosting.co.za> |
2013-10-23 13:49:43 | Kassym.Dorsel | link | issue19364 messages |
2013-10-23 13:49:42 | Kassym.Dorsel | create | |
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