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Created on 2017-11-15 16:59 by serhiy.storchaka, last changed 2022-04-11 14:58 by admin. This issue is now closed.
| Pull Requests | |||
|---|---|---|---|
| URL | Status | Linked | Edit |
| PR 4407 | merged | serhiy.storchaka, 2017-11-15 17:07 | |
| Messages (2) | |||
|---|---|---|---|
| msg306285 - (view) | Author: Serhiy Storchaka (serhiy.storchaka) *  |
Date: 2017-11-15 16:59 | |
In Python 3 different opcodes are used for pickling integers with protocol 1 and higher. But pickling with protocol 0 always uses the LONG opcode. In Python all such integers are unpickled to the long instances. Proposed PR makes integers that fit in a signed 32-bit integer be pickled with the INT opcode. This will decrease the size of a pickle (minus one byte 'L' per integer), speeds up pickling and unpickling, and makes these integers be unpickled to int instances in Python 2, that will save a memory. |
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| msg306342 - (view) | Author: Serhiy Storchaka (serhiy.storchaka) * |
Date: 2017-11-16 07:44 | |
New changeset 3daaafb700df45716bb55f3a293f88773baf3463 by Serhiy Storchaka in branch 'master': bpo-32037: Use the INT opcode for 32-bit integers in protocol 0 pickles. (#4407) https://github.com/python/cpython/commit/3daaafb700df45716bb55f3a293f88773baf3463 |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:58:54 | admin | set | github: 76218 |
| 2017-11-16 07:45:07 | serhiy.storchaka | set | status: open -> closed resolution: fixed stage: patch review -> resolved |
| 2017-11-16 07:44:45 | serhiy.storchaka | set | messages: + msg306342 |
| 2017-11-15 17:07:49 | serhiy.storchaka | set | keywords:
+ patch stage: patch review pull_requests: + pull_request4356 |
| 2017-11-15 16:59:49 | serhiy.storchaka | create | |