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  1. import timeit
  2.  
  3. def timeit_replace(iter):
  4.     replace_setup = """
  5. text = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
  6. """
  7.     replace_main = """
  8. text.replace('H', '').replace('O', '').replace('G', '').replace('E', '')
  9. """
  10.     print 'replace:',
  11.     print timeit.timeit(replace_main, replace_setup, number = iter)
  12.  
  13.  
  14. def timeit_replace_uni(iter):
  15.     replace_setup = """
  16. text = u'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
  17. """
  18.     replace_main = """
  19. text.replace(u'H', u'').replace(u'O', u'').replace(u'G', u'').replace(u'E', u'')
  20. """
  21.     print 'replace(unicode):',
  22.     print timeit.timeit(replace_main, replace_setup, number = iter)
  23.  
  24. def timeit_sub(iter):
  25.     sub_setup = """
  26. text = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
  27. import re
  28. pattern = re.compile('[HOGE]')
  29. """
  30.     sub_main = """
  31. pattern.sub('', text)
  32. """
  33.     print 'sub:',
  34.     print timeit.timeit(sub_main, sub_setup, number = iter)
  35.  
  36.  
  37. def timeit_sub_uni(iter):
  38.     sub_setup = """
  39. text = u'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
  40. import re
  41. pattern = re.compile(u'[HOGE]')
  42. """
  43.     sub_main = """
  44. pattern.sub('', text)
  45. """
  46.     print 'sub(unicode):',
  47.     print timeit.timeit(sub_main, sub_setup, number = iter)
  48.  
  49. def timeit_translate(iter):
  50.     translate_setup = """
  51. text = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
  52. """
  53.     translate_main = """
  54. text.translate(None, 'HOGE')
  55. """
  56.     print 'translate:',
  57.     print timeit.timeit(translate_main, translate_setup, number = iter)
  58.  
  59. def timeit_translate_uni(iter):
  60.     translate_uni_setup = """
  61. text = u'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
  62. delete = {ord(u'H'): None, ord(u'O'): None, ord(u'G'): None, ord(u'E'): None}
  63. """
  64.     translate_uni_main = """
  65. text.translate(delete)
  66. """
  67.     print 'translate(unicode):',
  68.     print timeit.timeit(translate_uni_main, translate_uni_setup, number = iter)
  69.  
  70. if __name__ == '__main__':
  71.     timeit_replace(500000)
  72.     timeit_sub(500000)
  73.     timeit_translate(500000)
  74.     timeit_replace_uni(500000)
  75.     timeit_sub_uni(500000)
  76.     timeit_translate_uni(500000)
Success #stdin #stdout 8.5s 10840KB
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stdout
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replace: 0.845347166061
sub: 1.4913828373
translate: 0.403444051743
replace(unicode): 0.987900018692
sub(unicode): 1.63653588295
translate(unicode): 3.04258799553
https://ideone.com/FqxLgM
language:
Python (cpython 2.7.16)
created:
11 years ago
visibility:
secret

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