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  1. # http://stackoverflow.com/q/33600768/5290909
  2. # Match last statement in Python while loop
  3. import re
  4.  
  5. while_loop = re.compile(r'''
  6. 			#while statement (group 1 captures the indentation)
  7. 			^([ \t]*)  while\b  .*  $
  8.  
  9. 			#code
  10. 			(?:
  11. 			    #comments with any indentation
  12. 			    (?:
  13. 			        \s*?
  14. 			        \n  [ \t]*  [#].* 
  15. 			    )*
  16.  
  17. 			    #Optional else lines
  18. 			    (?:
  19. 			        \s*?
  20. 			        \n\1  else  [ \t]*  .*  $
  21. 			    )?
  22.  
  23. 			    #following lines with more indentation
  24. 			    \s*?
  25. 			    \n\1  [ \t]+  (?P<last_statement>.*)
  26. 			)*
  27.  
  28. 			\n?
  29. ''', re.MULTILINE | re.VERBOSE)
  30.  
  31.  
  32. test_str = r'''
  33. 			while something:
  34. 			    do something;
  35. 			    do somethingelse;
  36. 			    do thelastthing;
  37. 			continue with other statements..
  38. '''
  39.  
  40.  
  41. # Loop matches
  42. m = 0
  43. for match in while_loop.finditer(test_str):
  44. 	m += 1
  45. 	print( 'Match #%s [%s:%s]\nLast statement [%s:%s]:\t"%s"' 
  46. 		%(m, match.start(), match.end(), match.start("last_statement"),
  47. 		match.end("last_statement"), match.group("last_statement")))
  48.  
  49. if m == 0:
  50. 	print("NO MATCH")
Success #stdin #stdout 0.01s 8968KB
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Standard input is empty
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Match #1 [1:91]
Last statement [74:90]:	"do thelastthing;"
https://ideone.com/V0H19n
# Match Last statement in Python While loop
# http://stackoverflow.com/q/33600768/5290909
language:
Python (cpython 2.7.16)
created:
10 years ago
visibility:
secret

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