Python Flet Tutorial: Minimize Code Clutter In Flet Apps

Here's a short but very useful Python tutorial on how to use Python dictionary to separate widget styling in order to minimize code cluttering and increase code readability. Plus, a bonus at the end shoving how to implement in-line conditionals inside dictionaries to toggle easily between light and dark mode.

Channel GitHub:

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[levelup]

Omg how so smooth tutorial, thanks a million for the incredibely useful content

[gangs]

Thank you. In your other video you use **main_style in another class rather than in def main. How to use the condition then since there is no theme_mode ?

[dppic]

Hi, why dont work for me?

from typing import Any
import flet as ft


def box_style(theme: ft.Page.theme_mode) -> dict[str, Any]:
# having access to the theme property allows us to use
print(theme)
return {
"width": 100,
"height": 100,
"bgcolor": "teal" if theme == "dark" else "pink",
"border_radius": 6,
"border": ft.border.all(2, "white") if theme == "dark" else ft.border.all(2, "black")
}


def main(page: ft.Page) -> None:
page.horizontal_alignment = "center"
page.vertical_alignment = "center"
page.theme_mode = "white"

def dropdown_changed(e):
page.theme_mode = e.data
print(e.data)
page.update()

drop = ft.Dropdown(on_change=dropdown_changed,
options=[
ft.dropdown.Option("dark"),
ft.dropdown.Option("white")])

page.add(drop,
page.update()


ft.app(target=main)

[praveenhamal]

what if if want to change some property of new object... say bg_color="pink" for new container

[Nicpesca]

Hola, en el momento estoy intentando hacer que unas imágenes dentro de un contenedor cambien de tamaño según como cambie de tamaño la pantalla, pero no lo he logrado. Te agradecería pudieras ayudarme