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Created on 2011-03-13 09:04 by daniel.urban, last changed 2022-04-11 14:57 by admin. This issue is now closed.
| Files | ||||
|---|---|---|---|---|
| File name | Uploaded | Description | Edit | |
| copy_metaclass.patch | daniel.urban, 2011-03-13 09:04 | review | ||
| copy_metaclass_2.patch | daniel.urban, 2012-06-03 13:49 | Updated patch | review | |
| Messages (8) | |||
|---|---|---|---|
| msg130731 - (view) | Author: Daniel Urban (daniel.urban) *  |
Date: 2011-03-13 09:04 | |
copy.copy cannot copy a class which have a metaclass other than type:
>>> import abc
>>> import copy
>>>
>>> class C(metaclass=abc.ABCMeta):
... pass
...
>>> copy.copy(C)
Traceback (most recent call last):
...
TypeError: can't pickle int objects
The reason seems to be, as described in msg8329 (issue494904) that the __reduce_ex__ function inherited from object will be called instead of the method bound to the class object (that's the reason of the strange error message). (See also issue7689.)
The interesting thing is, that copy.deepcopy was already fixed in 4680ef4fe90a. I'm attaching a patch, that does basically the same for copy that was done with deepcopy (it also includes a test).
|
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| msg131343 - (view) | Author: Éric Araujo (eric.araujo) *  |
Date: 2011-03-18 17:57 | |
Looks good to me. |
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| msg162211 - (view) | Author: Daniel Urban (daniel.urban) * |
Date: 2012-06-03 13:49 | |
I've updated the patch to the current version. I've also checked, that the tests still pass. |
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| msg182891 - (view) | Author: Jyrki Pulliainen (nailor) * | Date: 2013-02-24 20:26 | |
Hi, to be able to include your patch, could you sign the contributor form, please: http://www.python.org/psf/contrib/ ? |
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| msg182893 - (view) | Author: Daniel Urban (daniel.urban) * |
Date: 2013-02-24 20:53 | |
I did, and I've been told that it has been added to the bug tracker: http://mail.python.org/pipermail/python-committers/2012-May/001987.html |
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| msg182894 - (view) | Author: Jyrki Pulliainen (nailor) * | Date: 2013-02-24 21:03 | |
Oh, my bad. The * was not just showing next to your name. Maybe someone with more access rights can help? |
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| msg204965 - (view) | Author: Roundup Robot (python-dev) |
Date: 2013-12-01 21:26 | |
New changeset c6bb6f304f75 by Alexandre Vassalotti in branch '3.3': Issue #11480: Fixed copy.copy to work with classes with custom metaclasses. http://hg.python.org/cpython/rev/c6bb6f304f75 New changeset c4715c9f442f by Alexandre Vassalotti in branch 'default': Issue #11480: Merge with 3.3. http://hg.python.org/cpython/rev/c4715c9f442f |
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| msg204966 - (view) | Author: Alexandre Vassalotti (alexandre.vassalotti) * |
Date: 2013-12-01 21:27 | |
Thank you for the patch! |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:57:14 | admin | set | github: 55689 |
| 2013-12-01 21:27:54 | alexandre.vassalotti | set | status: open -> closed versions: + Python 3.4, - Python 3.1, Python 3.2 messages: + msg204966 assignee: alexandre.vassalotti resolution: fixed stage: patch review -> resolved |
| 2013-12-01 21:26:58 | python-dev | set | nosy:
+ python-dev messages: + msg204965 |
| 2013-02-24 21:03:08 | nailor | set | messages: + msg182894 |
| 2013-02-24 20:53:23 | daniel.urban | set | messages: + msg182893 |
| 2013-02-24 20:26:17 | nailor | set | nosy:
+ nailor messages: + msg182891 |
| 2012-06-03 13:49:15 | daniel.urban | set | files:
+ copy_metaclass_2.patch nosy: + ncoghlan messages: + msg162211 |
| 2011-03-18 17:57:22 | eric.araujo | set | nosy:
+ eric.araujo, pitrou messages: + msg131343 |
| 2011-03-14 16:48:18 | stutzbach | set | keywords:
+ needs review nosy: + alexandre.vassalotti, stutzbach stage: patch review |
| 2011-03-13 09:04:19 | daniel.urban | create | |