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   1 class adapter:
   2     def __init__(self, fun1, fun2):
   3         self.fun1 = fun1
   4         self.fun2 = fun2
   5     def __call__(self, *args, **kwargs):
   6         args, kwargs = self.fun1 (*args, **kwargs)
   7         self.fun2 (*args, **kwargs)
   8 
   9 
  10 if __name__ == '__main__':
  11     def fun1 (**args):
  12         print args['a'], args['b']
  13     def fun1_adp (a, b):
  14         return (), {'a':a, 'b':b}
  15     adp = adapter (fun1_adp, fun1)
  16     adp (3, 4)
  17 
  18     def fun2 (a, b):
  19         print a, b
  20     def fun2_adp (**kwargs):
  21         return (kwargs['a'], kwargs['b']), {}
  22     adp = adapter (fun2_adp, fun2)
  23     adp (b=3, a=5)

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   1 class A:
   2     def __init__(self):
   3         onChatEvent = delegate (proto='onChatEvent(**kwargs)')
   4 
   5 class B:
   6     def display(self, msg):
   7         print msg

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   1 class BB(B):
   2     def display1(self, **kwargs):
   3         self.display (args['chat'])
   4 a = A()
   5 b = BB()
   6 a.onChatEvent += b.display1
   7 a.onChatEvent (chat='haha')

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   1 class A_B_Adapter:
   2     def __init__(self):
   3         self.onChatEvent = delegate (proto='onChatEvent(msg)')
   4     def __call__(self, **kwargs):
   5         self.onChatEvent (kwargs['chat'])
   6 
   7 a = A()
   8 b = B()
   9 adp = A_B_Adapter()
  10 a.onChatEvent += adp
  11 adp.onChatEvent += b.display
  12 a.onChatEvent (chat='haha')

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   1 def A_B_Adapter(**kwargs):
   2     return (kwargs['chat'],), {}
   3 
   4 a = A()
   5 b = B()
   6 a.onChatEvent += adapter (A_B_Adapter, b.display)
   7 a.onChatEvent (chat='haha')