create_random_datafile.py

import os
import secrets
import string

def get_temp_file_name(a_file_name_length: int) -> str:
    return ''.join(secrets.choice(string.ascii_lowercase + string.digits) for _ in range(a_file_name_length))

def generate_temp_file(a_file_name: str, a_length: int):
    with open(a_file_name, 'wb') as OUTFILE:
        OUTFILE.write(os.urandom(a_length))

generate_temp_file(get_temp_file_name(8), pow(1024, 1))