hash.py

#!/usr/bin/env python3

import hashlib
import sys

from getpass import getpass

verbose = any(verbose in sys.argv for verbose in ['-v', '--verbose'])

password = getpass('Password: ')
assert password

iterations = int(getpass('Iteratons: ') or 0)

algorithm = getpass('Algorithm: ') or 'sha256'
hash_function = getattr(hashlib, algorithm)

res = hash_function(password.encode()).hexdigest()

iterator = range(iterations)
if verbose:
    try:
        from rich.progress import track
    except ImportError:
        ...
    else:
        iterator = track(iterator, description="Processing...")

    print('Algorithm:', algorithm)
    print('Iterations:', iterations)
    print('First hash:', res[0:4])


for i in iterator:
    res = hash_function(res.encode()).hexdigest()

print(res)