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gh-120754: Add to `io` optimization to what's new (#126466)
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@ -471,6 +471,15 @@ asyncio
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reduces memory usage.
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(Contributed by Kumar Aditya in :gh:`107803`.)
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io
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---
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* :mod:`io` which provides the built-in :func:`open` makes less system calls
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when opening regular files as well as reading whole files. Reading a small
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operating system cached file in full is up to 15% faster.
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:func:`pathlib.Path.read_bytes` has the most optimizations for reading a
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file's bytes in full. (Contributed by Cody Maloney and Victor Stinner in
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:gh:`120754` and :gh:`90102`.)
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Deprecated
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==========
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