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- import os
- lines_per_file = 300
- smallfile = None
- with open('/home/marco/Py/really_big_file.txt') as bigfile:
- for lineno, line in enumerate(bigfile):
- if lineno % lines_per_file == 0:
- if smallfile:
- smallfile.close()
- small_filename = 'small_file_{}.txt'.format(lineno + lines_per_file)
- smallfile = open(small_filename, "w")
- smallfile.write(line)
- if smallfile:
- smallfile.close()
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