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  1. def double_dec(cls):
  2.     class Wrapper(cls):
  3.         def __init__(self, val):
  4.             super(Wrapper, self).__init__()
  5.             self.double = 2 * val
  6.  
  7.     return Wrapper
  8.  
  9. @double_dec
  10. class C(object):
  11.     def __init__(self):
  12.         print ('hello')
  13.  
  14. tmp = C(4)
  15. print (tmp.double)
  16.  
Success #stdin #stdout 0.02s 9136KB
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Standard input is empty
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hello
8
https://ideone.com/OURJql
language:
Python 3 (python  3.9.5)
created:
2 years ago
visibility:
public

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