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  1. import re
  2.  
  3. rx = r'\d(?=(?:\d{3})+(?!\d))'
  4. print re.sub(rx, '\g<0>,', 'The number is: 123')
  5. print re.sub(rx, '\g<0>,', 'The number is: 1234')
  6. print re.sub(rx, '\g<0>,', 'The number is: 12345')
  7. print re.sub(rx, '\g<0>,', 'The number is: 123456')
  8. print re.sub(rx, '\g<0>,', 'The number is: 1234567')
Success #stdin #stdout 0.01s 9016KB
comments ()
stdin
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Standard input is empty
stdout
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The number is: 123
The number is: 1,234
The number is: 12,345
The number is: 123,456
The number is: 1,234,567
https://ideone.com/KdMCNi
language:
Python (cpython 2.7.16)
created:
9 years ago
visibility:
secret

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