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  1. def period(k):
  2.     m = 10
  3.     l = 1
  4.     while m%k != 1:
  5.         m*=10
  6.         l+=1
  7.     p = str(m // k)
  8.     #дополним длину нулями для случаев типа 009009009...
  9.     while len(p) < l:
  10.         p = "0" + p
  11.     return p
  12.  
  13.  
  14. print(period(11))
  15. print(period(7))
  16. print(period(19))
  17. print(period(171))
Success #stdin #stdout 0.02s 9112KB
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09
142857
052631578947368421
005847953216374269
https://ideone.com/2Kq2B6
language:
Python 3 (python  3.12)
created:
4 years ago
visibility:
public

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