Method duplicate_argument_value

mypy/messages.py:1036–1042

(self, callee: CallableType, index: int, context: Context)

            self.note(f'{fname} defined in "{module.fullname}"', context, code=codes.CALL_ARG)

    def duplicate_argument_value(self, callee: CallableType, index: int, context: Context) -> None:
        self.fail(
            '{} gets multiple values for keyword argument "{}"'.format(
                callable_name(callee) or "Function", callee.arg_names[index]
            ),
            context,
        )

    def does_not_return_value(self, callee_type: Type | None, context: Context) -> None:
        """Report an error about use of an unusable type."""