Python筆記之facade模式

class Shampoo:
 """子系統(tǒng)：賣各種洗發(fā)露"""
 def __init__(self):
  print('We sell all kinds of shampoo!')

 def piaorou_500ml(self, number):
  print('This is 500ml piaorou shampoo! Total: %d' % number)


class WashingPowder:
 """子系統(tǒng)：賣各種洗衣粉"""
 def __init__(self):
  print('We sell all kinds of washing powder!')

 def libai_3kg(self, number):
  print('This is 3kg libai washing powder! Total: %d' % number)


class Tissue:
 """子系統(tǒng)：賣各種抽紙"""
 def __init__(self):
  print('We sell all kinds of tissue!')

 def jierou_200sheets(self, number):
  print('This is 200 sheets tissue! Total: %d' % number)


class Salesman:
 """facade：售貨員"""
 def __init__(self):
  self.shampoo = Shampoo()
  self.washing_powder = WashingPowder()
  self.tissue = Tissue()
  print('What can I help you?')

 def sale_for_family(self):
  """家庭套餐"""
  self.shampoo.piaorou_500ml(1)
  self.washing_powder.libai_3kg(2)
  self.tissue.jierou_200sheets(6)


class UncleLi:
 """客戶端：李大爺"""
 def __init__(self):
  print('I want bug something!')

 def buy_for_family(self):
  """直接從售貨員那里購(gòu)買家庭套餐"""
  sale_man = Salesman()
  sale_man.sale_for_family()