Fixed #29869 -- Made UUIDField.to_python() convert integers.

django/db/models/fields/__init__.py

@@ -2319,8 +2319,9 @@ class UUIDField(Field):
 
     def to_python(self, value):
         if value is not None and not isinstance(value, uuid.UUID):
+            input_form = 'int' if isinstance(value, int) else 'hex'
             try:
-                return uuid.UUID(value)
+                return uuid.UUID(**{input_form: value})
             except (AttributeError, ValueError):
                 raise exceptions.ValidationError(
                     self.error_messages['invalid'],

tests/model_fields/test_uuid.py

@@ -64,6 +64,22 @@ class TestMethods(SimpleTestCase):
     def test_to_python(self):
         self.assertIsNone(models.UUIDField().to_python(None))
 
+    def test_to_python_int_values(self):
+        self.assertEqual(
+            models.UUIDField().to_python(0),
+            uuid.UUID('00000000-0000-0000-0000-000000000000')
+        )
+        # Works for integers less than 128 bits.
+        self.assertEqual(
+            models.UUIDField().to_python((2 ** 128) - 1),
+            uuid.UUID('ffffffff-ffff-ffff-ffff-ffffffffffff')
+        )
+
+    def test_to_python_int_too_large(self):
+        # Fails for integers larger than 128 bits.
+        with self.assertRaises(exceptions.ValidationError):
+            models.UUIDField().to_python(2 ** 128)
+
 
 class TestQuerying(TestCase):
     def setUp(self):