fix json schema test (#104)

Author: aminalaee

tests/test_json_schema.py

@@ -166,7 +166,6 @@ def test_to_json_schema_complex_regular_expression():
         to_json_schema(field)
 
     expected = (
-        "Cannot convert regular expression with non-standard flags "
-        "to JSON schema: re.IGNORECASE|re.UNICODE|re.VERBOSE"
+        "Cannot convert regular expression with non-standard flags to JSON schema: "
     )
     assert str(exc_info.value).startswith(expected)

typesystem/schemas.py

@@ -75,7 +75,7 @@ def __new__(
             for field in fields.values():
                 set_definitions(field, definitions)
 
-        #  Sort fields by their actual position in the source code,
+        # Sort fields by their actual position in the source code,
         # using `Field._creation_counter`
         attrs["fields"] = dict(
             sorted(fields.items(), key=lambda item: item[1]._creation_counter)