(self, other)
return None
This function should only be used internally

        self._intersect(other) returns a new, intersected set if self knows how
        to intersect itself with other, otherwise it returns ``None``

        When making a new set class you can be assured that other will not
        be a :class:`Union`, :class:`FiniteSet`, or :class:`EmptySet`

        Used within the :class:`Intersection` class
This function should only be used internally
This function should only be used internally
def _intersect(self, other):
        """
        This function should only be used internally

        self._intersect(other) returns a new, intersected set if self knows how
        to intersect itself with other, otherwise it returns ``None``

        When making a new set class you can be assured that other will not
        be a :class:`Union`, :class:`FiniteSet`, or :class:`EmptySet`

        Used within the :class:`Intersection` class
        """
        return None
def _intersect ( self , other ) : return None