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  1. import weakref
  2.  
  3. class Foo:
  4.     pass
  5.  
  6. bool(weakref.proxy(Foo()))
Runtime error #stdin #stdout #stderr 0.02s 27712KB
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stdin
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Standard input is empty
stdout
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Standard output is empty
stderr
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Traceback (most recent call last):
  File "./prog.py", line 6, in <module>
ReferenceError: weakly-referenced object no longer exists
https://ideone.com/H8lP7L
language:
Python 3 (python  3.12)
created:
6 years ago
visibility:
public

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