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  1. def decorator_factory(type_):
  2.     def decorator(cls):
  3.         class wrapper(cls):
  4.             contaVarClasse = sum(isinstance(value, type_) for value in vars(cls).values())
  5.         return wrapper
  6.     return decorator
  7.  
  8. @decorator_factory(str)
  9. class MyClass:
  10.     countme = "b"
  11.     notme = 2
  12.  
  13. print(MyClass.contaVarClasse)
Success #stdin #stdout 0.03s 9604KB
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https://ideone.com/OEaloD
language:
Python 3 (python  3.9.5)
created:
128 days ago
visibility:
secret

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