Encode-Decode-Python

Message Encode-Decode using python tKinter GUI and Caesar cipher

1. Input: User enters a message in the entry field.
2. Selection: User chooses between encoding or decoding from a dropdown menu.
3. Processing: When the "Process" button is clicked:
   • If encoding is selected, the program applies a Caesar cipher (shift of 3) to the input message.
   • If decoding is selected, the program reverses the Caesar cipher.
4. Output: The result label displays the encoded or decoded message.
5. Validation: If no message is entered, a message prompts the user to enter one.