[issue39734] Deprecate readinto() fallback path in _pickle.c

New submission from Antoine Pitrou : In issue39681 we reestablished the fallback to read() when a file-like object doesn't provide readinto() in _pickle.c. However, doing so leads to lower performance and all file-like object should nowadays provide readinto() (simply by deriving from the ri

[issue39734] Deprecate readinto() fallback path in _pickle.c

Change by Zackery Spytz : -- keywords: +patch nosy: +ZackerySpytz nosy_count: 3.0 -> 4.0 pull_requests: +18594 stage: -> patch review pull_request: https://github.com/python/cpython/pull/19237 ___ Python tracker