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  1. class Duck ():
  2. 	def quack():
  3. 		print "QUACK!"
  4.  
  5. class StrangeDog():
  6. 	def quack():
  7. 		print "QUACK!"
  8.  
  9. def lookADuck(duck):
  10. 	duck.quack()
  11.  
  12. dog = StrangeDog()
  13. lookADuck(dog)
Runtime error #stdin #stdout #stderr 0.01s 9008KB
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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 13, in <module>
  File "prog.py", line 10, in lookADuck
TypeError: quack() takes no arguments (1 given)
https://ideone.com/lcUJ50
language:
Python (cpython 2.7.16)
created:
8 years ago
visibility:
public

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