Usage: credit_card_cli.py [OPTIONS] COMMAND [ARGS]...
Options:
--help Show this message and exit.
Commands:
checksum validates the correctness of the checksum digit, according to Luhn's algorithm
generate determines the checksum digit of a partial card number, according to Luhn's algorithm
validate generates a random 16 digit credit card number, guaranteed to be valid according to Luhn's algorithm. Most likely not valid card in reality