Generate a very large random text file

gendata.py

import random
import string


def generator(size=6, chars=string.ascii_uppercase + string.digits):
    return ''.join(random.choice(chars) for _ in range(size))

def ran():
    return random.randint(0, 3800)

fo = open("bigtext.txt", "a")

for x in xrange(0, 1000000):
    fo.write('{0}\n'.format(generator(ran())))

fo.close()