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

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+from typing import Union
+
+from jsons._common_impl import get_class_name, NoneType
+from jsons._compatibility_impl import get_union_params
+from jsons._dump_impl import dump
+from jsons.exceptions import JsonsError, SerializationError
+
+
+def default_union_serializer(obj: object, cls: Union, **kwargs) -> object:
+    """
+    Serialize an object to any matching type of the given union. The first
+    successful serialization is returned.
+    :param obj: The object that is to be serialized.
+    :param cls: The Union type with a generic (e.g. Union[str, int]).
+    :param kwargs: Any keyword arguments that are passed through the
+    serialization process.
+    :return: An object of the first type of the Union that could be
+    serialized successfully.
+    """
+    sub_types = get_union_params(cls)
+
+    # Cater for Optional[...]/Union[None, ...] first to avoid blindly
+    # string-ifying None in later serializers.
+    if obj is None and NoneType in sub_types:
+        return obj
+
+    for sub_type in sub_types:
+        try:
+            return dump(obj, sub_type, **kwargs)
+        except JsonsError:
+            pass  # Try the next one.
+    else:
+        args_msg = ', '.join([get_class_name(cls_)
+                              for cls_ in get_union_params(cls)])
+        err_msg = ('Could not match the object of type "{}" to any type of '
+                   'the Union: {}'.format(type(obj), args_msg))
+        raise SerializationError(err_msg)