allow longs as indexes to group() (closes #22530)

Lib/test/test_re.py

@@ -971,6 +971,10 @@ subpattern None
             pat.split(string='abracadabra', maxsplit=1),
             ['', 'ab', 'racadabra'])
 
+    def test_match_group_takes_long(self):
+        self.assertEqual(re.match("(foo)", "foo").group(1L), "foo")
+        self.assertRaises(IndexError, re.match("", "").group, sys.maxint + 1)
+
 
 def run_re_tests():
     from test.re_tests import tests, SUCCEED, FAIL, SYNTAX_ERROR

Misc/NEWS

@@ -31,6 +31,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #22530: Allow the ``group()`` method of regular expression match objects
+  to take a ``long`` as an index.
+
 - Issue #22517: When a io.BufferedRWPair object is deallocated, clear its
   weakrefs.
 

Modules/_sre.c

@@ -3301,7 +3301,7 @@ match_getindex(MatchObject* self, PyObject* index)
 {
     Py_ssize_t i;
 
-    if (PyInt_Check(index))
+    if (PyInt_Check(index) || PyLong_Check(index))
         return PyInt_AsSsize_t(index);
 
     i = -1;