python_cipher/cipher.py at main · Joshuaisikah/python_cipher · GitHub

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import string
from art import logo


def check_direction_spelling(direction):
    if direction == "encode" or direction == "decode":
        return direction
    while direction != "encode" and direction != "decode":
        print(
            "there is a typoo in the  word '"
            + direction
            + "' recheck the spelling and type again either  'encode'  to encrypt or 'decode' to decrypt : "
        )
        direction = input().strip()
        if direction == "encode" or direction == "decode":
            return direction


def Caesar(start_text, shift_amount, cipher_direction):
    end_text = ""
    # the if statemnet controls only encoding
    # if the user encodes we dont get into the if statement
    if cipher_direction == "decode":
        shift_amount *= -1
    elif cipher_direction == "encode":
        shift_amount *= 1
    for character in start_text:
        if character in alphabet:
            position = alphabet.index(character)
            new_position = position + shift_amount
            end_text += alphabet[new_position]
        else:
            end_text += character
    print(
        f"the {cipher_direction.translate({ord(c): None for c in string.whitespace})}d  text is  {end_text}"
    )


should_game_continue = True
while should_game_continue:
    alphabet = [
        "a",
        "b",
        "c",
        "d",
        "e",
        "f",
        "g",
        "h",
        "i",
        "j",
        "k",
        "l",
        "m",
        "n",
        "o",
        "p",
        "q",
        "r",
        "s",
        "t",
        "u",
        "v",
        "w",
        "x",
        "y",
        "z",
        "!",
        "@",
        "#",
        "$",
        "%",
        "^",
        "&",
        "*",
        "?",
        "(",
        ")",
        "-",
        "+",
        ";",
        ":",
        "{",
        "}",
        "[",
        "]",
        "<",
        ">",
        ",",
        ".",
        "/",
        "_",
        "=",
    ]
    print(logo)
    print(
        "dont include spaces when typing encoding or decoding  (:   \n otherwise wrong meesage will be decoded or encoded"
    )
    direction = (
        input(" type ' encode ' to encrypt or 'decode' to  decrypt :  ").lower().strip()
    )
    check_direction_spelling(direction)
    text = input("type your message\n").lower().strip()
    shift = int(input(" type the shift number : "))
    # controlling the bigger shift number
    shift = shift % 25
    Caesar(start_text=text, shift_amount=shift, cipher_direction=direction)

    result = input("Type 'yes' to continue otherwise 'no' to terminate.\n : ").lower()
    if result == "no":
        should_game_continue = False
        print("nice time folk  :) ")