def __getattr__(self, name):
        """
        First try to get value from dynaconf then from Flask Config
        """
        with suppress(AttributeError):
            return getattr(self._settings, name)

        with suppress(KeyError):
            return self[name]

        raise AttributeError(
            f"'{self.__class__.__name__}' object has no attribute '{name}'"
        )

        First try to get value from dynaconf then from Flask Config
        
dynaconf/contrib/flask_dynaconf.py