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Created on 2020-03-30 01:22 by Nathan Brooks, last changed 2022-04-11 14:59 by admin. This issue is now closed.
| Messages (2) | |||
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| msg365289 - (view) | Author: Nathan Brooks (Nathan Brooks) | Date: 2020-03-30 01:22 | |
Faulty example: x = [1,2,3,4,5,6,7] # this should replace items 3 and 6 with each other x[2], x[x.index(6)] = 6, x[2] print(x) [1,2,3,4,5,6,7] Workaround: x = [1,2,3,4,5,6,7] i = x.index(6) # this replaces items 3 and 6 in the list. x[2], x[i] = 6, x[2] print(x) [1,2,6,4,5,3,7] |
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| msg365290 - (view) | Author: Benjamin Peterson (benjamin.peterson) *  |
Date: 2020-03-30 01:37 | |
Python doesn't have multiple assignment, just tuple unpacking. Consider the order of evaluation here: 1. tmp = (6, x[2]) (i.e., (6, 2)) 2. x[2] = tmp[0] 3. tmp2 = x.index(6) (= 2) 4. x[tmp2] = tmp[1] (i.e., x[2] = 2) |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:59:28 | admin | set | github: 84290 |
| 2020-03-30 01:37:54 | benjamin.peterson | set | status: open -> closed nosy: + benjamin.peterson messages: + msg365290 resolution: not a bug stage: resolved |
| 2020-03-30 01:22:35 | Nathan Brooks | create | |