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

Author: erlend-aasland

Lib/test/string_tests.py

@@ -1503,15 +1503,15 @@ def test_find_etc_raise_correct_error_messages(self):
         # issue 11828
         s = 'hello'
         x = 'x'
-        self.assertRaisesRegex(TypeError, r'^find\(', s.find,
+        self.assertRaisesRegex(TypeError, r'^find\b', s.find,
                                 x, None, None, None)
-        self.assertRaisesRegex(TypeError, r'^rfind\(', s.rfind,
+        self.assertRaisesRegex(TypeError, r'^rfind\b', s.rfind,
                                 x, None, None, None)
-        self.assertRaisesRegex(TypeError, r'^index\(', s.index,
+        self.assertRaisesRegex(TypeError, r'^index\b', s.index,
                                 x, None, None, None)
-        self.assertRaisesRegex(TypeError, r'^rindex\(', s.rindex,
+        self.assertRaisesRegex(TypeError, r'^rindex\b', s.rindex,
                                 x, None, None, None)
-        self.assertRaisesRegex(TypeError, r'^count\(', s.count,
+        self.assertRaisesRegex(TypeError, r'^count\b', s.count,
                                 x, None, None, None)
         self.assertRaisesRegex(TypeError, r'^startswith\b', s.startswith,
                                 x, None, None, None)

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

@@ -1,2 +1,10 @@
-Improve the performance of :meth:`str.startswith` and :meth:`str.endswith`
-by adapting them to the :c:macro:`METH_FASTCALL` calling convention.
+Improve the performance of the following :class:`str` methods
+by adapting them to the :c:macro:`METH_FASTCALL` calling convention:
+
+* :meth:`~str.count`
+* :meth:`~str.endswith`
+* :meth:`~str.find`
+* :meth:`~str.index`
+* :meth:`~str.rfind`
+* :meth:`~str.rindex`
+* :meth:`~str.startswith`