(self, other)
return self.difference(other)
Does the same thing as "self.difference(other)"
Does the same thing as "self.difference(other)"
Does the same thing as self . difference ( other )
def __or__(self, other):
        """Does the same thing as "self.difference(other)"
        """
        return self.difference(other)
def __or__ ( self , other ) : return self . difference ( other )