Password generator

password_generator.py

#!/usr/bin/python
import string, random, sys, os


# requires xclip to be installed
# copy to clipboard
def copy2clip(text):
    os.system(f'echo -n "{text}" | xclip -sel clip')


# notify at OS level
def os_notify(message="Password copied to clipboard"):
    os.system(f'notify-send "{message}"')


# generate password alphanumeric (lowercase & uppercase) plus not so common characters
def generate_password(length):
    letters = string.ascii_lowercase + string.ascii_uppercase + '0123456789' + '~!@#$%^&*()_+-=[]{};:<>?,.'
    return ''.join(random.choice(letters) for _ in range(length))


def main():
    try:
        password_length = int(sys.argv[-1]) if len(sys.argv) > 1 else 20
        password = generate_password(password_length)
        print(f'Password: {password}')
        # `xclip` package is required for this
        copy2clip(password)
        # `notify-send` required for this
        os_notify()
    except Exception as ex:
        print(f'Error: {ex}')


if __name__ == "__main__":
    main()

# ------------------------------------------------------------------------------------------
# Use this to create symbolic link so that you can run it in a new terminal with
# `password_generator [PASSWORD_LENGTH]`
# sudo ln -s /home/user/absolute/path/password_generator.py /usr/bin/password_generator
# ------------------------------------------------------------------------------------------