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  1. import re
  2.  
  3. pattern="[0-9]{1,2}(?: [0-9]{1,2})*$"
  4. check="01 03"
  5. a=re.match(pattern,check)
  6. if a:
  7.     print('Not valid value')
  8. else:
  9.     print("valid value")
Success #stdin #stdout 0.02s 27712KB
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stdin
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Standard input is empty
stdout
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Not valid value
https://ideone.com/hGU4lt
language:
Python 3 (python  3.12)
created:
6 years ago
visibility:
secret

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