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  1. def somentenumeros(entrada):
  2.     try:
  3.         int(entrada)
  4.         return True
  5.     except:
  6.         return False
  7.  
  8. while True:
  9.     cpf = input('Digite seu CPF ou digite os nove primeiros digitos ')
  10.     if not somentenumeros(cpf) or (len(cpf)!= 9 and len(cpf) != 11):
  11.         print('Erro. O valor digitado era inválido.')
  12.     else:
  13.         break
  14. print(cpf)
  15.  
  16. #http://pt.stackoverflow.com/q/187869/101
Success #stdin #stdout 0.02s 9236KB
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123456789
stdout
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Digite seu CPF ou digite os nove primeiros digitos 123456789
https://ideone.com/M5slYz
language:
Python 3 (python  3.9.5)
created:
3 years ago
visibility:
public

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