Point.py

class Point(object):
    
    def __init__(self, _x, _y):
        self._x = _x; self._y = _y
        
    @property
    def x(self):
        return self._x

    @x.setter
    def x(self, value):
        self._x = value
        
    @property
    def y(self):
        return self._y
        
    @y.setter
    def y(self, value):
        self._y = value