Method _print_invalid_arg

Lib/pdb.py:2635–2648

Return the usage string for a function.

(self, arg)

        return "\n".join(formatted)

    def _print_invalid_arg(self, arg):
        """Return the usage string for a function."""

        if not arg:
            self.error("Argument is required for this command")
        else:
            self.error(f"Invalid argument: {arg}")

        # Yes it's a bit hacky. Get the caller name, get the method based on
        # that name, and get the docstring from that method.
        # This should NOT fail if the caller is a method of this class.
        doc = inspect.getdoc(getattr(self, sys._getframe(1).f_code.co_name))
        if doc is not None:
            self.message(self._help_message_from_doc(doc, usage_only=True))

# Collect all command help into docstring, if not run with -OO