How do I permanently change a list after user's input?

[Ablazesphere]

To save information between separate runs you need to store information somewhere, e.g. database, simple text file, etc. Then when you run your script - read from storage, process the information in your script, e.g. - add, delete, update, etc. Depending on storage type you may need/want to update continuously while script runs, but in any case you need to save the information at least once just before before the script ends in order to store information for future use in a next run.

Please show me if you have any idea to update a program permanently.