fork download 
  1. class Foo(object):
  2.     class Bar(object):
  3.         def __init__(self):
  4.             # Abridged
  5.             self.a = 1
  6.     def __init__(self):
  7.         if not hasattr(self, 'bar'):
  8.         	# Should be a harmless check, right? Wrong.
  9.         	self.bar = self.Bar()
  10.  
  11.     def __getattr__(self, name):
  12.         return getattr(self.bar, name)
  13.  
  14. Foo()
Runtime error #stdin #stdout #stderr 0.02s 28904KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
stderr 
Traceback (most recent call last):
  File "./prog.py", line 14, in <module>
  File "./prog.py", line 7, in __init__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
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  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
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  File "./prog.py", line 12, in __getattr__
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  File "./prog.py", line 12, in __getattr__
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  File "./prog.py", line 12, in __getattr__
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  File "./prog.py", line 12, in __getattr__
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  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
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  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
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  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
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  File "./prog.py", line 12, in __getattr__
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  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
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  File "./prog.py", line 12, in __getattr__
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  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
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  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
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  File "./prog.py", line 12, in __getattr__
  File "./prog.py", line 12, in __getattr__
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RecursionError: maximum recursion depth exceeded
https://ideone.com/VQJWMu
language:
Python 3 (python  3.12)
created:
8 years ago
visibility:
public

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