Vfrdtyky

I'm doing my first app using toga and python together, and I have the following difficult:

When I click on the button, the pyttsx3 speaks what I need, but finishing the application, what I need is: pyttsx3 speaks after click on the button, but keep the application open to click how many times I want and don't quit. Here's the code:

    #coding: utf-8

    import speech_recognition as sr

    import webbrowser

    import pyttsx3

    from time import sleep

    import toga



    def btn_click(widget):

        engine = pyttsx3.init('nsss')

        engine.say("Hi, its just a test, thanks.")

        engine.runAndWait()



    def build(app):

        box = toga.Box()

        label = toga.Label('I will say something')

        button = toga.Button('Click here to listen', on_press=btn_click)

        button.style.padding = 50

        button.style.flex = 1

        box.add(label)

        box.add(button)

        return box



    def main():

        return toga.App('First App', 'org.pybee.helloworld', startup=build)





    if __name__ == '__main__':

        main().main_loop()

Screen