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  1. if type(__builtins__).__name__ == '_DefaultDict':
  2.     def __getattr__(name):
  3.         return f'custom {name}'
  4.  
  5.     print(a)
  6. else:
  7.     import sys
  8.     import builtins
  9.  
  10.     class _DefaultDict(dict):
  11.         def __missing__(self, name):
  12.             return __getattr__(name)
  13.  
  14.     __builtins__ = _DefaultDict(vars(builtins))
  15.     del _DefaultDict # avoid namespace pollution
  16.     exec(sys._getframe(0).f_code, globals())
Success #stdin #stdout 0.09s 14132KB
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custom a
https://ideone.com/ThEpv6
language:
Python 3 (python  3.12)
created:
45 days ago
visibility:
secret

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