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a guest Jun 18th, 2019 70 Never
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  1. input_file = open('file.txt', 'r')
  2. for line in input_file:
  3.     print line
  4.      
  5. from itertools import islice
  6. with open('file.txt') as fin:
  7.     lines = islice(fin, 1000000, 2000000) # or whatever ranges
  8.     for line in lines:
  9.         # do something
  10.      
  11. import linecache
  12.  
  13. for i in xrange(1000000, 2000000)
  14.     print linecache.getline('file.txt', i)
  15.      
  16. input_file = open('file.txt', 'r')
  17. for index, line in enumerate(input_file):
  18.     # Assuming you start counting from zero
  19.     if 1000000 <= index <= 2000000:
  20.         print line
  21.      
  22. 4.373  4.418  4.395    tail -n+50000000 test.in | head -n10
  23.  5.210  5.179  6.181    sed -n '50000000,50000010p;57890010q' test.in
  24.  5.525  5.475  5.488    head -n50000010 test.in | tail -n10
  25.  8.497  8.352  8.438    sed -n '50000000,50000010p' test.in
  26. 22.826 23.154 23.195    tail -n50000001 test.in | head -n10
  27. 25.694 25.908 27.638    ed -s test.in <<<"50000000,50000010p"
  28. 31.348 28.140 30.574    awk 'NR<57890000{next}1;NR==57890010{exit}' test.in
  29. 51.359 50.919 51.127    awk 'NR >= 57890000 && NR <= 57890010' test.in
  30.      
  31. lines_data = []    
  32. text_arr = multilinetext.split('n')
  33. for i in range(line_number_begin, line_number_end):
  34.     lines_data.append(multilinetext[i])
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