Update DATETIME_FORMAT to clarify it must be UTC (#1163)

pynamodb · Feb 28, 2023 · b5600ea · b5600ea
1 parent 9903c69
commit b5600ea
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/pynamodb/constants.py b/pynamodb/constants.py
@@ -97,7 +97,7 @@
 
 # Defaults
 DEFAULT_ENCODING = 'utf-8'
-DATETIME_FORMAT = '%Y-%m-%dT%H:%M:%S.%f%z'
+DATETIME_FORMAT = '%Y-%m-%dT%H:%M:%S.%f+0000'
 SERVICE_NAME = 'dynamodb'
 HTTP_OK = 200
 HTTP_BAD_REQUEST = 400

diff --git a/tests/test_attributes.py b/tests/test_attributes.py
@@ -204,7 +204,7 @@ def test_utc_date_time_deserialize_pre_1000_not_padded(self):
         ]
     )
     def test_utc_date_time_invalid(self, invalid_string):
-        with pytest.raises(ValueError, match="does not match format"):
+        with pytest.raises(ValueError, match=r"does not match format '%Y-%m-%dT%H:%M:%S.%f\+0000'"):
             self.attr.deserialize(invalid_string)