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Created on 2017-09-26 03:51 by methane, last changed 2022-04-11 14:58 by admin. This issue is now closed.
| Pull Requests | |||
|---|---|---|---|
| URL | Status | Linked | Edit |
| PR 3757 | merged | methane, 2017-09-26 03:55 | |
| Messages (5) | |||
|---|---|---|---|
| msg302998 - (view) | Author: Inada Naoki (methane) *  |
Date: 2017-09-26 03:51 | |
Makes `import functools` about 1.5 ms faster. * heapq is used only when Counter.most_common(n). * types and waakref is used only for singledispatch. master: import time: - _functools 76 us (self 76 us) import time: - _operator 110 us (self 110 us) import time: - operator 469 us (self 359 us) import time: - keyword 174 us (self 174 us) import time: - _heapq 189 us (self 189 us) import time: - heapq 400 us (self 211 us) import time: - itertools 137 us (self 137 us) import time: - reprlib 231 us (self 231 us) import time: - _collections 142 us (self 142 us) import time: - collections 3006 us (self 1456 us) import time: - collections.abc 191 us (self 191 us) import time: - types 518 us (self 327 us) import time: - weakref 577 us (self 577 us) import time: - functools 4903 us (self 729 us) patched: import time: - _functools 74 us (self 74 us) import time: - _operator 100 us (self 100 us) import time: - operator 460 us (self 361 us) import time: - keyword 174 us (self 174 us) import time: - itertools 139 us (self 139 us) import time: - reprlib 226 us (self 226 us) import time: - _collections 85 us (self 85 us) import time: - collections 2593 us (self 1512 us) import time: - functools 3369 us (self 703 us) |
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| msg302999 - (view) | Author: Serhiy Storchaka (serhiy.storchaka) * |
Date: 2017-09-26 04:43 | |
Initially my patch for issue30152 included the change in collections. But it was removed on Raymond's request. |
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| msg303002 - (view) | Author: Raymond Hettinger (rhettinger) * |
Date: 2017-09-26 05:02 | |
Go ahead. |
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| msg303366 - (view) | Author: Terry J. Reedy (terry.reedy) * |
Date: 2017-09-29 22:40 | |
An option for deferred imports would be to leave a comment at the top where the import would otherwise be. Example: # import types, weakref # Deferred to single_dispatch() This accomplishes the PEP8 purpose of making all dependencies of the module visible at the top. |
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| msg303399 - (view) | Author: Inada Naoki (methane) * |
Date: 2017-09-30 07:13 | |
New changeset 9811e80fd0ed9d74c76a66f1dd4e4b8afa9e8f53 by INADA Naoki in branch 'master': bpo-31581: Reduce the number of imports for functools (GH-3757) https://github.com/python/cpython/commit/9811e80fd0ed9d74c76a66f1dd4e4b8afa9e8f53 |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:58:52 | admin | set | github: 75762 |
| 2017-09-30 07:17:17 | methane | set | status: open -> closed resolution: fixed stage: patch review -> resolved |
| 2017-09-30 07:13:04 | methane | set | messages: + msg303399 |
| 2017-09-29 22:40:18 | terry.reedy | set | nosy:
+ terry.reedy messages: + msg303366 |
| 2017-09-26 05:02:10 | rhettinger | set | messages: + msg303002 |
| 2017-09-26 04:43:12 | serhiy.storchaka | set | nosy:
+ rhettinger, serhiy.storchaka messages: + msg302999 |
| 2017-09-26 03:55:13 | methane | set | keywords:
+ patch stage: patch review pull_requests: + pull_request3743 |
| 2017-09-26 03:51:59 | methane | create | |