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  1. from inspect import ismethod
  2.  
  3. class A:
  4.     @property
  5.     def prop(self) -> int:
  6.         return 1
  7.  
  8.     @property
  9.     def other_prop(self) -> int:
  10.         return self.prop * 4  # Uses self.prop
  11.  
  12.     def method(self) -> int:
  13.         return self.prop * 2  # Uses self.prop
  14.  
  15. class B:
  16.     def __init__(self, a: A):
  17.         self._a = a
  18.  
  19.     @property
  20.     def prop(self) -> int:
  21.         return 2  # Override A's property
  22.  
  23.     def __getattr__(self, attr):
  24.         value = getattr(type(self._a), attr, None)
  25.         if isinstance(value, property):
  26.             return value.fget(self)
  27.         value = getattr(self._a, attr)
  28.         if ismethod(value):
  29.             value = value.__func__.__get__(self)
  30.         return value
  31.  
  32. b = B(A())
  33. print(b.prop)
  34. print(b.method())
  35. print(b.other_prop)
Success #stdin #stdout 0.19s 18600KB
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https://ideone.com/uE3WHl
language:
Python 3 (python  3.12)
created:
39 days ago
visibility:
secret

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