| @@ -359,6 +359,17 @@ Optimizations |
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* :class:`uuid.UUID` now uses ``__slots__`` to reduce its memory footprint. |
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+* Improved performance of :func:`operator.itemgetter` by 33%. Optimized |
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+ argument handling and added a fast path for the common case of a single |
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+ non-negative integer index into a tuple (which is the typical use case in |
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+ the standard library). (Contributed by Raymond Hettinger in |
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+:issue:`35664`.) |
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+ |
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+* Sped-up field lookups in :func:`collections.namedtuple`. They are now more |
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+ than two times faster, making them the fastest form of instance variable |
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+ lookup in Python. (Contributed by Raymond Hettinger, Pablo Galindo, and |
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+ Serhiy Storchaka in :issue:`32492`.) |
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+ |
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* The :class:`list` constructor does not overallocate the internal item buffer |
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if the input iterable has a known length (the input implements ``__len__``). |
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This makes the created list 12% smaller on average. (Contributed by Pablo |