def postprocess(self, value):
        """
        Parameters:
            value: Expects a `str | int | float` corresponding to the value of the dropdown entry to be selected.
        Returns:
            Returns the value of the selected dropdown entry.
        """
        if value is None:
            return None
        self._warn_if_invalid_choice(value)
        return value

        Parameters:
            value: Expects a `str | int | float` corresponding to the value of the dropdown entry to be selected.
        Returns:
            Returns the value of the selected dropdown entry.
        
gradio/_simple_templates/simpledropdown.py