Generating compressor test data

import itertools, random
pl = [''.join(p) for p in itertools.permutations([chr(65 + x) for x in range(11)])]
sections = set()
while len(sections) < 3500:
    sections.add(random.randint(0, 480924 * 83))
sectstrs = ['\n'.join(pl[x:x+83]) for x in sections]
with open('permutes.txt', 'w') as pf:
    for _ in range(19):
        random.shuffle(sectstrs)
        pf.write('\n'.join(sectstrs) + '\n')