I have been wanting to make this code shorter but dont know how

Question

Cypher encrypt characters by key
https://code.sololearn.com/c9QG0zOLIK8y/?ref=app

Answer 1

can you explain your encryption algorithms first to make helping you much easier

Answer 2

here try this code i just made.
this might help you learn how to make smaller, cleaner code man
https://code.sololearn.com/cOAzJBVOIr01/?ref=app

Answer 3

It takes in a string of characters and rotates each character by an encryption key eg 4

Answer 4

A will be encrypted to E

Answer 5

Thanks