Application structure with calculations in an infinite loop?

Question

Python

Let's say there is a button, its task is to run an infinite loop in the function, some calculations that should be displayed in the form of text and graphics (canvas). Each new click starts calculations with different data. How to do it right? Create a new thread on each click and check if there is one already running, exit it and then start a new one? Or pass something to the stream (some variable) and constantly check this data? Or use after, but then you need to store the calculation data somewhere, since the function will be executed without a loop.

How to implement correctly? How does is called? What are the practices? What to look for?