Keep a script running in the background

[Guillermo]

Hi,

I need a script to keep running in the background after it's loaded
some data. It will make this data available to the main program in the
form of a dictionary, but I don't want to reload the calculated data
every time the user needs it via the main program.

I won't be working with an UI, hope that can be made easily in Python
somehow.

Cheers,

Guillermo