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  1. class DummyMeta(type):
  2.     pass
  3.  
  4. class A(type, metaclass=DummyMeta):
  5.     pass
  6.  
  7. class B(A):
  8.     pass
  9.  
  10. B.__class__ = B
  11. A.__class__ = B
  12.  
  13. print(isinstance(A, B))
  14. print(isinstance(B, B))
  15. print(issubclass(B, A))
Success #stdin #stdout 0.02s 27704KB
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Standard input is empty
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True
True
True
https://ideone.com/GoceSf
language:
Python 3 (python  3.9.5)
created:
4 years ago
visibility:
public

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