Программирование на python flet

 import flet as ft 
 
def main(page: ft.Page): 
    page.title = "Минималистичное приложение" 
    page.bgcolor = ft.colors.WHITE  
 
    def create_home_view(): 
        return ft.View( 
            "/", 
            [ 
                ft.AppBar( 
                    title=ft.Text("Главная страница", size=24, weight=ft.FontWeight.BOLD), 
                    bgcolor=ft.colors.BLUE_600, 
                    color=ft.colors.WHITE, 
                ), 
                ft.Container( 
                    content=ft.Column( 
                        [ 
                            ft.Text("Добро пожаловать в наше приложение!", size=20, weight=ft.FontWeight.NORMAL), 
                            ft.ElevatedButton( 
                                "Перейти на страницу 2", 
                                on_click=lambda _: page.go("/page2"), 
                                bgcolor=ft.colors.BLUE_500, 
                                color=ft.colors.WHITE, 
                            ), 
                        ], 
                        alignment=ft.MainAxisAlignment.CENTER, 
                        horizontal_alignment=ft.CrossAxisAlignment.CENTER, 
                    ), 
                    padding=20, 
                    alignment=ft.alignment.center, 
                ), 
            ], 
        ) 
 
    def create_page2_view(): 
        return ft.View( 
            "/page2", 
            [ 
                ft.AppBar( 
                    title=ft.Text("Страница 2", size=24, weight=ft.FontWeight.BOLD), 
                    bgcolor=ft.colors.BLUE_600, 
                    color=ft.colors.WHITE, 
                ), 
                ft.Container( 
                    content=ft.Column( 
                        [ 
                            ft.Text("Это вторая страница.", size=20, weight=ft.FontWeight.NORMAL), 
                            ft.ElevatedButton( 
                                "Вернуться на главную", 
                                on_click=lambda _: page.go("/"), 
                                bgcolor=ft.colors.BLUE_500, 
                                color=ft.colors.WHITE, 
                            ), 
                        ], 
                        alignment=ft.MainAxisAlignment.CENTER, 
                        horizontal_alignment=ft.CrossAxisAlignment.CENTER, 
                    ), 
                    padding=20, 
                    alignment=ft.alignment.center, 
                ), 
            ], 
        ) 
 
    def route_change(e: ft.RouteChangeEvent): 
        page.views.clear() 
        if page.route == "/": 
            page.views.append(create_home_view()) 
        elif page.route == "/page2": 
            page.views.append(create_page2_view()) 
        page.update() 
 
    page.on_route_change = route_change 
    page.go("/")  
 
ft.app(target=main)