good morning !

def encode_message(message: str, shift: int) -> str:

    """

    Encodes the given message by shifting letters forward in the alphabet by 'shift' positions.

    Digits are also increased by 'shift' (modulo 10), while special characters remain unchanged.

    """

    eng = "abcdefghijklmnopqrstuvwxyz"

    eng2 = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"

    result = []

    for char in message:

        if char in eng:

            l = eng.index(char)

            result.append(eng[(l + shift) % 26])  # Ensuring wrap-around

        elif char in eng2:

            l = eng2.index(char)

            result.append(eng2[(l + shift) % 26])

        elif char.isdigit():

            result.append(str((int(char) + shift) % 10))  # Handling digits

        else:

            result.append(char)

   

    return "".join(result)  

if __name__ == "__main__":

    msg = "hello123!"

    shift_value = 3

    encoded_msg = encode_message(msg, shift_value)

    print(encoded_msg)