8000 gh-117431: Adapt str.find and friends to Argument Clinic (#117468) · python/cpython@7ecd55d · GitHub
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gh-117431: Adapt str.find and friends to Argument Clinic (#117468)
This change gives a significant speedup, as the METH_FASTCALL calling convention is now used. The following methods are adapted: - str.count - str.find - str.index - str.rfind - str.rindex
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‎Lib/test/string_tests.py

Lines changed: 5 additions & 5 deletions
8000
Original file line numberDiff line numberDiff line change
@@ -1503,15 +1503,15 @@ def test_find_etc_raise_correct_error_messages(self):
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# issue 11828
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s = 'hello'
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x = 'x'
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self.assertRaisesRegex(TypeError, r'^find\(', s.find,
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self.assertRaisesRegex(TypeError, r'^find\b', s.find,
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x, None, None, None)
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self.assertRaisesRegex(TypeError, r'^rfind\(', s.rfind,
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self.assertRaisesRegex(TypeError, r'^rfind\b', s.rfind,
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x, None, None, None)
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self.assertRaisesRegex(TypeError, r'^index\(', s.index,
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self.assertRaisesRegex(TypeError, r'^index\b', s.index,
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x, None, None, None)
1512-
self.assertRaisesRegex(TypeError, r'^rindex\(', s.rindex,
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self.assertRaisesRegex(TypeError, r'^rindex\b', s.rindex,
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x, None, None, None)
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self.assertRaisesRegex(TypeError, r'^count\(', s.count,
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self.assertRaisesRegex(TypeError, r'^count\b', s.count,
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x, None, None, None)
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self.assertRaisesRegex(TypeError, r'^startswith\b', s.startswith,
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x, None, None, None)

‎Misc/NEWS.d/next/Core and Builtins/2024-04-02-17-37-35.gh-issue-117431.vDKAOn.rst

Lines changed: 10 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,2 +1,10 @@
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Improve the performance of :meth:`str.startswith` and :meth:`str.endswith`
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by adapting them to the :c:macro:`METH_FASTCALL` calling convention.
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Improve the performance of the following :class:`str` methods
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by adapting them to the :c:macro:`METH_FASTCALL` calling convention:
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* :meth:`~str.count`
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* :meth:`~str.endswith`
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* :meth:`~str.find`
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* :meth:`~str.index`
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* :meth:`~str.rfind`
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* :meth:`~str.rindex`
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* :meth:`~str.startswith`

‎Objects/clinic/unicodeobject.c.h

Lines changed: 280 additions & 1 deletion
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