Flet for Python - easily build interactive multi-platform apps in Python
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Project description
Build multi-platform apps in Python. No frontend experience required.
Flet is a framework that allows building mobile, desktop and web applications in Python only without prior experience in frontend development.
Single code base for any device
Your app will equally look great on iOS, Android, Windows, Linux, macOS and web.
Build an entire app in Python
Build a cross-platform app without knowledge of Dart, Swift, Kotlin, HTML or JavaScript - only Python!
150+ built-in controls and services
Beautiful UI widgets with Material and Cupertino design: layout, navigation, dialogs, charts - Flet uses Flutter to render UI.
50+ Python packages for iOS and Android
Numpy, pandas, pydantic, cryptography, opencv, pillow and other popular libraries.
Full web support
Flet apps run natively in modern browsers using WebAssembly and Pyodide, with no server required. Prefer server-side? Deploy as a Python web app with real-time UI updates.
Built-in packaging
Build standalone executables or bundles for iOS, Android, Windows, Linux, macOS and web. Instantly deploy to App Store and Google Play.
Test on iOS and Android
Test your project on your own mobile device with Flet App. See your app updates as you make changes.
Extensible
Easily wrap any of thousands of Flutter packages to use with Flet or build new controls in pure Python using built-in UI primitives.
Accessible
Flet is built with Flutter which has solid accessibility foundations on Android, iOS, web, and desktop.
Flet app example
Below is a simple "Counter" app, with a text field and two buttons to increment and decrement the counter value:
import flet as ft
def main(page: ft.Page):
page.title = "Flet counter example"
page.vertical_alignment = ft.MainAxisAlignment.CENTER
input = ft.TextField(value="0", text_align=ft.TextAlign.RIGHT, width=100)
def minus_click(e):
input.value = str(int(input.value) - 1)
def plus_click(e):
input.value = str(int(input.value) + 1)
page.add(
ft.Row(
alignment=ft.MainAxisAlignment.CENTER,
controls=[
ft.IconButton(ft.Icons.REMOVE, on_click=minus_click),
input,
ft.IconButton(ft.Icons.ADD, on_click=plus_click),
],
)
)
ft.run(main)
To run the app, install flet:
pip install 'flet[all]'
then launch the app:
flet run counter.py
This will open the app in a native OS window - what a nice alternative to Electron! 🙂
To run the same app as a web app use --web option with flet run command:
flet run --web counter.py
Learn more
Community
Contributing
Want to help improve Flet? Check out the contribution guide.
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