A simple password generator for CLI with automatic copying of the generated password to clipboard. Don't forget to give the rights to execute.

password_generator.py

#!/usr/bin/env python3
import argparse
import platform
import random
import subprocess
import sys
from string import ascii_letters, digits, punctuation


def parse_args() -> argparse.Namespace:
    parser = argparse.ArgumentParser(
        description="The program generates passwords with different length and complexity",
        formatter_class=argparse.ArgumentDefaultsHelpFormatter,
    )
    parser.add_argument("-l", "--length", type=int, default=16, help="Set password length. Max = 99")
    parser.add_argument(
        "--special",
        action=argparse.BooleanOptionalAction,
        type=bool,
        default=True,
        help="Special characters switch, type no-special for false.",
    )
    return parser.parse_args()


def create_password(len_pas: int, spec_symbols: bool = True) -> str:
    """Make random password when run."""
    symbols = ascii_letters + digits
    if spec_symbols:
        symbols = symbols + punctuation
    secure_random = random.SystemRandom()
    password = "".join(secure_random.choice(symbols) for _ in range(len_pas))
    return password


def get_beautiful_answer(password: str) -> None:
    """Beautiful console output"""
    if not password:
        print("Password length not set")
        sys.exit(0)
    print("Your newly generated password:")
    print("-" * len(password))
    print(password)
    print("-" * len(password))
    print("Password copied to the clipboard.")


def get_clipboard() -> str:
    clipboard_types = {
        "Darwin": "pbcopy",
        "Windows": "clip",
        "Linux": "xsel",
    }
    os_type = platform.system()
    return clipboard_types.get(os_type)


def main() -> None:
    args = parse_args()
    if args.length > 99:
        args.length = 99
    new_password = create_password(args.length, spec_symbols=args.special)
    clipboard = get_clipboard()
    subprocess.run(clipboard, text=True, input=new_password)
    get_beautiful_answer(new_password)


if __name__ == "__main__":
    main()