(self, other)
return self + (-other)
Subtract two points, or subtract a factor from this point's
        coordinates.
Subtract two points, or subtract a factor from this point's
        coordinates.
Subtract two points or subtract a factor from this point s coordinates .
def __sub__(self, other):
        """Subtract two points, or subtract a factor from this point's
        coordinates."""
        return self + (-other)
def __sub__ ( self , other ) : return self + ( - other )