凯撒的密码使用python，可能需要一点帮助。

I'm trying to make a "Caesar's Cipher" while using python..this is what I have so far. Could anyone tell me how this is looking? Am I going in the right direction? What am I missing? When I run the program to say for example (josh is cool) I don't get the cipher on the same line. It looks like this when I do I'm trying to make a "Caesar's Cipher" while us