Flet for Pyodide - build standalone Single-Page Applications (SPA) in Python with Flutter UI

Flet is a rich User Interface (UI) framework to quickly build interactive web, desktop and mobile apps in Python without prior knowledge of web technologies like HTTP, HTML, CSS or JavaSscript. You build UI with controls based on Flutter widgets to ensure your programs look cool and professional.

Requirements

• Python 3.7 or above on Windows, Linux or macOS

Installation

pip install flet

Create the app

Create main.py file with the following content:

import flet as ft

def main(page: ft.Page):
    page.title = "Flet counter example"
    page.vertical_alignment = ft.MainAxisAlignment.CENTER

    txt_number = ft.TextField(value="0", text_align=ft.TextAlign.RIGHT, width=100)

    def minus_click(e):
        txt_number.value = str(int(txt_number.value) - 1)
        page.update()

    def plus_click(e):
        txt_number.value = str(int(txt_number.value) + 1)
        page.update()

    page.add(
        ft.Row(
            [
                ft.IconButton(ft.icons.REMOVE, on_click=minus_click),
                txt_number,
                ft.IconButton(ft.icons.ADD, on_click=plus_click),
            ],
            alignment=ft.MainAxisAlignment.CENTER,
        )
    )

ft.app(main)

Run the app

flet run --web main.py

Publish app as a static website

flet publish main.py

A static website is published into ./dist directory.

Test website

python -m http.server --directory dist

Open http://localhost:8000 in your browser to check the published website.

Deploy website

Deploy a static website to any free hosting such as GitHub Pages, Cloudflare Pages or Vercel!

Learn more

Visit Flet website.

Continue with Python guide to learn how to make a real app.

Browse for more Flet examples.

Join to a conversation on Flet Discord server.