gen_10_k_files.py

#!/usr/bin/env python3

import os
from os.path import join, expanduser
from random import randint
import secrets

num_files = 10000
file_size_min = 4
file_size_max = 10
home_path = expanduser('~')
junk_dir = 'random_junk'

if not os.path.exists(join(home_path, junk_dir)):
    os.makedirs(join(home_path, junk_dir))

for i in range(num_files):
    # this gives us a random 32 char long string as filename
    fname = secrets.token_hex(32)

    with open(join(home_path, junk_dir, fname), 'w+') as f:
        size = randint(file_size_min, file_size_max)
        size_in_bytes = size * (1024 ** 2)
        num_64b_strings_needed = size_in_bytes//64
        for i in range(num_64b_strings_needed):
            f.write(secrets.token_hex(32))