class Rectangle(object):
def __init__(self):
self.width = 0
self.height = 0
def setSize(self, size):
self.width, self.height = size
def getSize(self):
return self.width, self.height
size = property(getSize, setSize)
r = Rectangle()
r.width = 10
r.height = 5
print r.size
r.size = 150, 100
print r.width