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  1. import re
  2.  
  3. strings = [
  4. 	"the owner has a dog",
  5. 	"the owner has a black and brown dog",
  6. 	"John has a dog",
  7. 	"John has a black and brown dog"
  8. ]
  9.  
  10. pattern = r"^[^o\r\n]*(?:(?!\bowner\b)o[^o\r\n]*)*\bdog\b"
  11.  
  12. for s in strings:
  13.   res = re.search(pattern, s)
  14.   print(res)
Success #stdin #stdout 0.02s 9504KB
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<re.Match object; span=(0, 14), match='John has a dog'>
<re.Match object; span=(0, 30), match='John has a black and brown dog'>
https://ideone.com/M5Eka6
language:
Python 3 (python  3.12)
created:
5 years ago
visibility:
secret

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