Python sha256 example with multi-threading from file

sha256_example.py

import concurrent.futures
from hashlib import sha256
VERBOSE=False
output_file=open("hashed_passwords.txt","w+")
def do_sha256(passw):
    hashed = sha256(passw.rstrip().encode()).hexdigest()
    if VERBOSE:
        print(hashed)
    output_file.write(hashed+"\n")
    output_file.flush()


MAX_THREADS=100
passwords = [ i for i in open("./hashcat/example.dict").read().splitlines()]
threads = min(MAX_THREADS, len(passwords))
with concurrent.futures.ThreadPoolExecutor(max_workers=threads) as executor:
    executor.map(do_sha256, passwords)