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  1. import re
  2.  
  3. string = '\t \r\nFoo\t Fooo\t Dog\t Foo\t \r\n\r\n'
  4. result = re.sub(
  5.     '^[\r\n\t]+|[\r\n\t]+$|([\r\n\t]+)',
  6.     lambda x: '|' if x.group(1) else '',
  7.     string
  8. )
  9. print(result)
Success #stdin #stdout 0.03s 9448KB
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stdin
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Standard input is empty
stdout
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 |Foo| Fooo| Dog| Foo|
https://ideone.com/vIG8q4
language:
Python 3 (python  3.12)
created:
4 years ago
visibility:
secret

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