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Created on 2018-06-21 10:07 by jdemeyer, last changed 2022-04-11 14:59 by admin. This issue is now closed.
| Messages (4) | |||
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| msg320148 - (view) | Author: Jeroen Demeyer (jdemeyer) *  |
Date: 2018-06-21 10:07 | |
Methods of Python functions compare equal if the functions are equal and if __self__ is equal: >>> class X: ... def __eq__(self, other): return True ... def meth(self): pass >>> X().meth == X().meth True This is because X() == X() even though X() is not X(). For extension types, we get instead: >>> [].append == [].append False This is because comparison is done with "is" instead of "==". This is a needless difference. |
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| msg320153 - (view) | Author: Serhiy Storchaka (serhiy.storchaka) *  |
Date: 2018-06-21 10:55 | |
This is a duplicate of issue1617161. |
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| msg320166 - (view) | Author: Jeroen Demeyer (jdemeyer) * |
Date: 2018-06-21 11:21 | |
> This is a duplicate of issue1617161. Well, it's really the opposite. That issue seems to be arguing that __self__ should be compared using "is" while I think it should be compared using "==". |
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| msg320181 - (view) | Author: R. David Murray (r.david.murray) * |
Date: 2018-06-21 13:31 | |
This is still a duplicate issue, though, you are just arguing for a different resolution of the other one :) |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:59:02 | admin | set | github: 78106 |
| 2018-06-21 13:31:52 | r.david.murray | set | nosy:
+ r.david.murray messages: + msg320181 |
| 2018-06-21 11:21:24 | jdemeyer | set | messages: + msg320166 |
| 2018-06-21 10:55:07 | serhiy.storchaka | set | status: open -> closed superseder: Instance methods compare equal when their self's are equal nosy: + serhiy.storchaka messages: + msg320153 resolution: duplicate stage: resolved |
| 2018-06-21 10:07:32 | jdemeyer | create | |