Method requires_int_or_single_byte

mypy/messages.py:1520–1527

(self, context: Context, format_call: bool = False)

        )

    def requires_int_or_single_byte(self, context: Context, format_call: bool = False) -> None:
        self.fail(
            '"{}c" requires an integer in range(256) or a single byte'.format(
                ":" if format_call else "%"
            ),
            context,
            code=codes.STRING_FORMATTING,
        )

    def requires_int_or_char(self, context: Context, format_call: bool = False) -> None:
        self.fail(