Code Louisville Python programming exercise.

In cryptography, a Caesar cipher, also known as Caesar's cipher, the shift cipher, Caesar's code, or Caesar shift, is one of the simplest and most widely known encryption techniques. It is a type of substitution cipher in which each letter in the plaintext is replaced by a letter some fixed number of positions down the alphabet. For example, with a left shift of 3, D would be replaced by A, E would become B, and so on. The method is named after Julius Caesar, who used it in his private correspondence.

From: Caesar cipher on wikipedia.org

In this exercise we will implement a Caesar cipher with a shift of 5. The program should ask the user for a plain text sentence and print the encrypted text.

Here is an example execution of the program:

Please enter a senctence: python is fun!
The encrypted sentence is: udymts nx kzs!

Note that the program should not replace special characters like spaces or exclamation marks.

1. Clone the repo to your machine
2. Add your code to the cipher.py file

This exercise is based on the Caesar cipher exersise in the openSAP Python for Beginners course.