Thank you Murray,
About the win10toast, you can’t find a great documentation on the Internet, because simply, there is no complexity to use it, you have to check if the library is successfully installed. Try open the command prompt (cmd), type :

python

then type:

import ToastNotifier

if there is an error then you have to re-try install the package, restart the command prompt (cmd), and type :

pip install win10toast

Once the installation has been completed you could try a simple notification :

from win10toast import ToastNotifier
toaster = ToastNotifier()
toaster.show_toast("Notification Title","Hello World !")