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Created on 2020-11-16 17:43 by lys.nikolaou, last changed 2022-04-11 14:59 by admin. This issue is now closed.
| Pull Requests | |||
|---|---|---|---|
| URL | Status | Linked | Edit |
| PR 23319 | merged | lys.nikolaou, 2020-11-16 17:54 | |
| PR 23329 | merged | lys.nikolaou, 2020-11-16 23:14 | |
| Messages (3) | |||
|---|---|---|---|
| msg381133 - (view) | Author: Lysandros Nikolaou (lys.nikolaou) *  |
Date: 2020-11-16 17:43 | |
While a walrus is valid withing generator expressions in 3.8, it's not in 3.9 and onward.
➜ cpython git:(master) ✗ python3.8
Python 3.8.6 (default, Oct 3 2020, 16:26:47)
[GCC 9.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> i = 2
>>> a = [1, 2, 3, 4]
>>> (b := i + j for j in a)
<generator object <genexpr> at 0x7f231e78c740>
➜ cpython git:(master) python3.10
Python 3.10.0a1+ (heads/master:b580ed1, Oct 19 2020, 15:52:12)
[GCC 9.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> i = 2
>>> a = [1, 2, 3, 4]
>>> (b := i + j for j in a)
File "<stdin>", line 1
(b := i + j for j in a)
^
SyntaxError: invalid syntax
This is a regression introduced by the new parser.
|
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| msg381178 - (view) | Author: miss-islington (miss-islington) | Date: 2020-11-16 23:08 | |
New changeset cb3e5ed0716114393696ec7201e51fe0595eab4f by Lysandros Nikolaou in branch 'master': bpo-42374: Allow unparenthesized walrus in genexps (GH-23319) https://github.com/python/cpython/commit/cb3e5ed0716114393696ec7201e51fe0595eab4f |
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| msg381185 - (view) | Author: Lysandros Nikolaou (lys.nikolaou) * |
Date: 2020-11-16 23:39 | |
New changeset 2b800ef809eefbc96a536e4b43a8285f2353f64d by Lysandros Nikolaou in branch '3.9': bpo-42374: Allow unparenthesized walrus in genexps (GH-23319) (GH-23329) https://github.com/python/cpython/commit/2b800ef809eefbc96a536e4b43a8285f2353f64d |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:59:38 | admin | set | github: 86540 |
| 2020-11-16 23:39:39 | lys.nikolaou | set | status: open -> closed resolution: fixed stage: patch review -> resolved |
| 2020-11-16 23:39:06 | lys.nikolaou | set | messages: + msg381185 |
| 2020-11-16 23:14:58 | lys.nikolaou | set | pull_requests: + pull_request22217 |
| 2020-11-16 23:08:38 | miss-islington | set | nosy:
+ miss-islington messages: + msg381178 |
| 2020-11-16 17:54:33 | lys.nikolaou | set | keywords:
+ patch stage: patch review pull_requests: + pull_request22210 |
| 2020-11-16 17:43:28 | lys.nikolaou | create | |