def lt(self, other):
        """
        Strictly less than. Returns True if no part of this Interval
        extends higher than or into other.
        :raises ValueError: if either self or other is a null Interval
        :param other: Interval or point
        :return: True or False
        :rtype: bool
        """
        self._raise_if_null(other)
        return self.end <= getattr(other, 'begin', other)
def lt ( self , other ) : self . _raise_if_null ( other ) return self . end <= getattr ( other , 'begin' , other )
Strictly less than. Returns True if no part of this Interval
        extends higher than or into other.
        :raises ValueError: if either self or other is a null Interval
        :param other: Interval or point
        :return: True or False
        :rtype: bool