Method print_usage

mypy/main.py:415–418

(self, file: SupportsWrite[str] | None = None)

    # Help-printing methods
    # =====================
    def print_usage(self, file: SupportsWrite[str] | None = None) -> None:
        if file is None:
            file = self.stdout
        self._print_message(self.format_usage(), file)

    def print_help(self, file: SupportsWrite[str] | None = None) -> None:
        if file is None: