mirror of https://github.com/python/cpython
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@ -400,7 +400,8 @@ The following performance enhancements have been added:
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(:issue:`21486`, :issue:`21487`, :issue:`20826`)
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* Many operations on :class:`io.BytesIO` are now 50% to 100% faster.
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(Contributed by Serhiy Storchaka in :issue:`15381`.)
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(Contributed by Serhiy Storchaka in :issue:`15381` and David Wilson in
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:issue:`22003`.)
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* :func:`marshal.dumps` is now faster (65%-85% with versions 3--4, 20-25% with
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versions 0--2 on typical data, and up to 5x in best cases).
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