bpo-1635741: Convert _sre types to heap types and establish module state (PEP 384) (GH-23393)

Author: Erlend Egeberg Aasland

Lib/test/test_re.py

@@ -2197,6 +2197,10 @@ def test_overlap_table(self):
         self.assertEqual(f("ababba"), [0, 0, 1, 2, 0, 1])
         self.assertEqual(f("abcabdac"), [0, 0, 0, 1, 2, 0, 1, 0])
 
+    def test_signedness(self):
+        self.assertGreaterEqual(sre_compile.MAXREPEAT, 0)
+        self.assertGreaterEqual(sre_compile.MAXGROUPS, 0)
+
 
 class ExternalTests(unittest.TestCase):
 

Misc/NEWS.d/next/Library/2020-11-19-09-59-07.bpo-1635741.7cMypH.rst

@@ -0,0 +1,2 @@
+Convert _sre module types to heap types (PEP 384). Patch by Erlend E.
+Aasland.