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  1. class Friendly(object):
  2.     def hello(self):
  3.         print('Hello')
  4.  
  5. class Person(object): pass
  6.  
  7. def modify_Person_to_be_friendly():
  8.     global Person
  9.  
  10.     Person = type('Person', (Friendly,), dict(Person.__dict__)) 
  11.  
  12. modify_Person_to_be_friendly()
  13. p = Person()
  14. p.hello()
  15. print(p.__dict__)
Runtime error #stdin #stdout #stderr 0.02s 27712KB
comments (?)
stdin
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Standard input is empty
stdout
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Hello
stderr
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Traceback (most recent call last):
  File "./prog.py", line 15, in <module>
TypeError: descriptor '__dict__' for 'Person' objects doesn't apply to 'Person' object
https://ideone.com/6OyEcw
language:
Python 3 (python  3.9.5)
created:
5 years ago
visibility:
public

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