def block_range(self, lineno):
return lineno, self.tolineno<EOL>
Get a range from the given line number to where this node ends.

        :param lineno: The line number to start the range at.
        :type lineno: int

        :returns: The range of line numbers that this node belongs to,
            starting at the given line number.
        :rtype: tuple(int, int or None)