gh-94107: Make _pydecimal.Context hashable to match _decimal.Context

Author: nirajan-khatiwada

Lib/_pydecimal.py

@@ -4060,9 +4060,6 @@ def _regard_flags(self, *flags):
         for flag in flags:
             self._ignored_flags.remove(flag)
 
-    # We inherit object.__hash__, so we must deny this explicitly
-    __hash__ = None
-
     def Etiny(self):
         """Returns Etiny (= Emin - prec + 1)"""
         return int(self.Emin - self.prec + 1)

Lib/test/test_decimal.py

@@ -3658,6 +3658,18 @@ def test_same_quantum(self):
         self.assertRaises(TypeError, c.same_quantum, '1', 2)
         self.assertRaises(TypeError, c.same_quantum, 1, '2')
 
+    def test_context_hash(self):
+        Context = self.decimal.Context
+        c1 = Context()
+        c2 = Context()
+        self.assertIsInstance(hash(c1), int)
+        self.assertIsInstance(hash(c2), int)
+        self.assertEqual(hash(c1), c1.__hash__())
+        self.assertNotEqual(hash(c1), hash(c2))
+        d = {c1: 'first', c2: 'second'}
+        self.assertEqual(d[c1], 'first')
+        self.assertEqual(d[c2], 'second')
+
     def test_scaleb(self):
         Decimal = self.decimal.Decimal
         Context = self.decimal.Context

Misc/NEWS.d/next/Library/2026-09-25-15-30-00.gh-issue-94107.cT4xW9.rst

@@ -0,0 +1 @@
+Make :class:`!_pydecimal.Context` hashable by inheriting :meth:`object.__hash__`, matching the behavior of :class:`!_decimal.Context` per :pep:`399`.