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gh-120754: Add to io open() and .read() optimization to what's new #126466

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Nov 6, 2024
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gh-120754: Add to io open() and .read() optimization to what's new #126466

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9 changes: 9 additions & 0 deletions Doc/whatsnew/3.14.rst
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Expand Up @@ -471,6 +471,15 @@ asyncio
reduces memory usage.
(Contributed by Kumar Aditya in :gh:`107803`.)

io
---
* :mod:`io` which provides the built-in :func:`open` makes less system calls
when opening regular files as well as reading whole files. Reading a small
operating system cached file in full is up to 15% faster.
:func:`pathlib.Path.read_bytes` has the most optimizations for reading a
file's bytes in full. (Contributed by Cody Maloney and Victor Stinner in
:gh:`120754` and :gh:`90102`.)

Deprecated
==========

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