(self)
return self.x ** 2 + self.y ** 2
Returns the squared length of the vector pointing from the origin
        to this point.
Returns the squared length of the vector pointing from the origin
        to this point.
Returns the squared length of the vector pointing from the origin to this point .
def sq_length(self):
        """Returns the squared length of the vector pointing from the origin
        to this point."""
        return self.x ** 2 + self.y ** 2
def sq_length ( self ) : return self . x ** 2 + self . y ** 2