genpass: A CLI random password generator

genpass.py

#!/usr/bin/python3
import argparse, string, secrets, pyperclip # pyperclip>=1.8.2

parser = argparse.ArgumentParser(prog="genpass", description="A CLI random password generator")

parser.add_argument("-l", "--length",  help="password length",                 type=int)
parser.add_argument("-a", "--amount",  help="number of passwords to generate", type=int)
parser.add_argument("-c", "--copy",    help="copy password to clipboard",      action="store_true")
parser.add_argument("-e", "--exclude", help="characters to exclude from password")

args = parser.parse_args()

length     = args.length if args.length else 16
amount     = args.amount if args.amount else 1
copy       = args.copy
exclude    = args.exclude
characters = list(string.ascii_letters + string.digits + string.punctuation)

def main() -> None:
    if exclude:
        for c in list(exclude):
            characters.remove(c)
    
    password = "\n".join("".join(secrets.choice(characters) for _ in range(length)) for _ in range(amount))
    
    match copy:
        case True:
            pyperclip.copy(password)
            print("Password copied to clipboard")
        case False:
            print(password)

if __name__ == "__main__":
    main()