How do I prevent PysimpleGUI from closing the window

Question

For some reason, even though I'm not sure why it's doing that, my program just closes the window instead of it doing what I want it to do

   while True:
     event, values = main_window.read()
     if event in (None,"Exit"):
         break
     if event == 'GPU info':
         print('cool')
     main_window.close()   

Any clues to how I change its behaviour to hide or do nothing when I press a button that is not exit?

Answer 1

main_window.close() is in the while loop.