#!/usr/bin/env python
# coding=utf-8
"""
study __getattr__ and __setattr__
"""
class Rectangle(object):
"""
the width and length of Rectangle
"""
def __init__(self):
self.width = 0
self.length = 0
def setSize(self, size):
self.width, self.length = size
def getSize(self):
return self.width, self.length
size = property(getSize, setSize)
class NewRectangle(object):
def __init__(self):
self.width = 0
self.length = 0
def __setattr__(self, name, value):
if name == "size":
self.width, self.length = value
else:
self.__dict__[name] = value
def __getattr__(self, name):
if name == "size":
return self.width, self.length
else:
raise AttributeError
if __name__ == "__main__":
r = NewRectangle()
r.width = 3
r.length = 4
print r.size
r.size = 30, 40
print r.width
print r.length