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  1. import re
  2.  
  3. regex = r"^room \d+(?:\n(?!room \d|service prov).*)*\nservice prov.*(?:\n(?!room|exit).*)*\nexit$"
  4.  
  5. test_str = ("room 31\n"
  6. 	"name \"Bob\"\n"
  7. 	"no TV outlet 49\n"
  8. 	"exit\n"
  9. 	"room 5\n"
  10. 	"name \"Ted\"\n"
  11. 	"service prov 10.1\n"
  12. 	"outlet 49-50,52\n"
  13. 	"exit\n"
  14. 	"room 80\n"
  15. 	"name \"Alice\"\n"
  16. 	"outlet 49-50,52\n"
  17. 	"dead outlet 1-20\n"
  18. 	"exit\n"
  19. 	"room 50\n"
  20. 	"name \"Tim\"\n"
  21. 	"outlet 49\n"
  22. 	"exit\n"
  23. 	"room 51\n"
  24. 	"name \"Sue\"\n"
  25. 	"service prov 10.2.0\n"
  26. 	"outlet 49\n"
  27. 	"exit")
  28.  
  29. print(re.findall(regex, test_str, re.MULTILINE))
  30.  
  31.  
Success #stdin #stdout 0.02s 9460KB
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stdin
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Standard input is empty
stdout
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['room 5\nname "Ted"\nservice prov 10.1\noutlet 49-50,52\nexit', 'room 51\nname "Sue"\nservice prov 10.2.0\noutlet 49\nexit']
https://ideone.com/aZbg10
language:
Python 3 (python  3.12)
created:
4 years ago
visibility:
public

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