pyhon(kivy) app reload itself after every change

I am completely new in python and started coding an app. I encounter one problem and that’s testing the app. every time I change something I have to run and close the app again and again to see every change. is there a way for the app to reload itself when I change a file or something (like android studio that shows every change), and please explain in detail as I said I am new in python.

Answer

Could you have a look at this video?