devide.py

import sys
import os

in_file = sys.argv[1]

try:
	os.makedirs('source')
except:
	pass
with open(in_file, 'r') as f:
	lines = f.readlines()
	
	for l in range(int(len(lines)/1000)):
		path = os.path.join('source', f'wiki__{l}.txt')
		with open(path, 'w') as out:
			last = l * 1000 + 1000
			last = last if last < len(lines) else len(lines)
			for f in lines[l*1000 : last]:
				out.write(f)