外观模式
模式说明
所谓外观模式就是提供一个统一的接口,用来访问子系统中的一群接口。
模式结构图

程序示例
说明:灯光、荧屏、空调、电视一键开启、关闭
代码:
class Light(object):
def on(self):
print 'light turn on'
def off(self):
print 'light turn off'
class Screen(object):
def on(self):
print 'screen turn on'
def off(self):
print 'screen turn off'
class AirConditioner(object):
def on(self):
print 'AirConditioner turn on'
def off(self):
print 'AirConditioner turn off'
class TV(object):
def on(self):
print 'TV turn on'
def off(self):
print 'TV turn off'
class Facade(object):
"""description of class"""
light=Light()
screen=Screen()
airconditioner = AirConditioner()
tv=TV()
def on(self):
print 'one key all on'
self.light.on()
self.screen.on()
self.airconditioner.on()
self.tv.on()
def off(self):
print 'one key all off'
self.light.off()
self.screen.off()
self.airconditioner.off()
self.tv.off()
if __name__=='__main__':
facade=Facade()
facade.on()
facade.off()
运行结果:

参考来源:
http://www.cnblogs.com/chenssy/p/3679190.html
http://www.cnblogs.com/wuyuegb2312/archive/2013/04/09/3008320.html
http://www.cnblogs.com/Terrylee/archive/2006/07/17/334911.html
