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  1. def counter(start):
  2.     x = [start]
  3.  
  4.     def adder(y):
  5.         """Increment the counter and return the new value."""
  6.         x[0] += 1
  7.         return x[0] + y
  8.  
  9.     return adder
  10.  
  11. adder = counter(start=0)
  12. print(adder(5))
  13. print(adder(5))
  14. print(adder(5))
  15.  
Success #stdin #stdout 0.04s 64072KB
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stdin 
Standard input is empty
stdout 
6
7
8
https://ideone.com/l5EVaV
language:
Python (PyPy 2.7.13)
created:
7 years ago
visibility:
public

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