Widgets in guizero can be given a
command when created, which can be used to call a function when the widget is used.
By using commands you can make your GUI change and take actions when the user uses it e.g. clicking a button, selecting an option, typing a message.
Create an application which puts
hello world on the GUI when a button is pressed:
from guizero import App, Text, PushButton def say_hello(): text.value = "hello world" app = App() text = Text(app) button = PushButton(app, command=say_hello) app.display()