Intercept Tkinter "Exit" command?
You want to use the wm_protocol method of the toplevel window. Specifically, you are interested in the WM_DELETE_WINDOW protocol. If you use that method, it allows you to register a callback which is called when the window is being destroyed.
Usage:
root.protocol("WM_DELETE_WINDOW", app.on_delete)
You can use python atexit module.
For example:
import atexitdef doSomethingOnExit(): passatexit.register(doSomethingOnExit)
In my case, the following code didn't work:
root.protocol("WM_DELETE_WINDOW", app.on_delete) # doesn't workHowever, it worked using this form:
root.wm_protocol ("WM_DELETE_WINDOW", app.on_delete) # does work