cirq_google.serialization.arg_from_proto

Extracts a python value from an argument value proto.

cirq_google.serialization.arg_from_proto(
    arg_proto: cirq_google.api.v2.program_pb2.Arg,
    *,
    arg_function_language: str,
    required_arg_name: Optional[str] = None
) -> Optional[ARG_RETURN_LIKE]

arg_proto The proto containing a serialized value.
arg_function_language The arg_function_language field from Program.Language.
required_arg_name If set to None, the method will return None when given an unset proto value. If set to a string, the method will instead raise an error complaining that the value is missing in that situation.

The deserialized value, or else None if there was no set value and required_arg_name was set to None.

ValueError If the arg protohas a value of an unrecognized type or is missing a required arg name.