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Created on 2010-09-23 20:39 by adamnemecek, last changed 2022-04-11 14:57 by admin. This issue is now closed.
| Messages (2) | |||
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| msg117231 - (view) | Author: Adam Nemecek (adamnemecek) | Date: 2010-09-23 20:39 | |
I'm not sure if this is the intended behavior, but it seems unusual to me. a = [set([]) for i in range(2)] evaluates to a list [set([]),set([])] and b= 2*[set([])] evaluates to [set([]),set([])]. Nothing wrong here. Nevertheless, if I do a[0].add(1), a has the value [set([1]), set([])] but b[0].add(1) evaluates to [set([1]), set([1])]. I understand that in list b, all of the sets refer to the same object in memory, nevertheless, I do not feel like this is the correct behavior. |
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| msg117235 - (view) | Author: Eric V. Smith (eric.smith) *  |
Date: 2010-09-23 21:12 | |
This is well defined in Python and will not change. |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:57:06 | admin | set | github: 54141 |
| 2010-09-23 21:12:57 | eric.smith | set | status: open -> closed type: enhancement nosy: + eric.smith messages: + msg117235 resolution: rejected stage: resolved |
| 2010-09-23 20:39:06 | adamnemecek | create | |