comment here

.CondaPkg/env/lib/python3.11/site-packages/jsons/serializers/default_date.py

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+from datetime import date
+
+from jsons._datetime_impl import to_str, RFC3339_DATE_PATTERN
+
+
+def default_date_serializer(obj: date, **kwargs) -> str:
+    """
+    Serialize the given date instance to a string. It uses the RFC3339
+    pattern. If date is a localtime, an offset is provided. If date is
+    in UTC, the result is suffixed with a 'Z'.
+    :param obj: the date instance that is to be serialized.
+    :param kwargs: not used.
+    :return: ``date`` as an RFC3339 string.
+    """
+    return to_str(obj, False, kwargs['fork_inst'],
+                  RFC3339_DATE_PATTERN)