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  1. import functools
  2. import inspect
  3.  
  4. class OverrideException(Exception):
  5.    pass
  6.  
  7. def override(method):
  8.    def wrapper(self,*args,**kwargs):    
  9.       base = inspect.getmro(type(self))[1]           
  10.       if not hasattr(base, method.__name__):
  11.         raise OverrideException('Base class "{0}" do not have method "{1}"'.format(base.__name__,method.__name__))
  12.       return method(self,*args,**kwargs) 
  13.    return wrapper  
  14.  
  15.  
  16. class Base:
  17.     def __init__(self):
  18.        pass
  19.  
  20.     # virtual 
  21.     def test(self):
  22.        print("Base.test()")    
  23.  
  24.  
  25. class Derived(Base):
  26.     def __init__(self):
  27.        super().__init__()
  28.  
  29.     @override 
  30.     def test(self):
  31.        print("Derived.test()")    
  32.  
  33.     @override 
  34.     def test2(self):
  35.        print("Derived.test2()")    
  36.  
  37.  
  38. def main():  
  39.      d = Derived()
  40.      d.test()
  41.      d.test2()
  42.  
  43.  
  44. if __name__=='__main__':
  45.   try:
  46.      main()
  47.   except Exception as e:   
  48.      print(e)
  49.  
Success #stdin #stdout 0.02s 10100KB
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Standard input is empty
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Derived.test()
Base class "Base" do not have method "test2"
https://ideone.com/Y3cs6D
language:
Python 3 (python  3.12)
created:
5 years ago
visibility:
public

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