# coding:utf-8

'''

filename: rectangle2.py

'''

class NewRectangle:

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)