please write in python 3

Functions:

get_caesar_mapping(shift, message): This function accepts a shift amount (positive or negative) and a message and returns the smallest encoding dictionary needed to encode the message. Remember to wrap as outlined above (you may assume that the shift is in the range of [-94,94] so that you never have to wrap twice).

caesar_encode(shift, message): This function accepts a shift amount (positive or negative) and a message and returns the encoded message. Hint: You already know how to do a substitution encoding if you had an encoding dictionary for this shift amount...

caesar_decode(shift, message): This function accepts a shift amount (positive or negative) and an encoded message and returns the decoded message. Note: shift is how much the message was shifted, not how much to shift it back...

MORE FUNCTIONS :

vigenere_encode(secret, message): This function accepts a secret (string) and a message and returns the encoded message.

vigenere_decode(secret, message): This function accepts a secret (string) and an encoded message and returns the decoded message. Note: secret is phrase used to encode the message, but you need to decode...