wybthon 0.20.0

Client-side Python SPA framework via Pyodide

Build interactive web apps in Python, no JavaScript required.

Documentation · Getting Started · Examples · Contributing

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Overview

Wybthon is a client-side SPA framework that lets you build interactive web applications entirely in Python. Powered by Pyodide, it runs in the browser and provides a signals-first reactive model inspired by SolidJS. With fine-grained reactivity, a virtual DOM, component model, routing, forms, and context, you can write modern frontends without touching JavaScript.

Features

• Signals-first reactivity: Fine-grained updates with create_signal, create_effect, create_memo, and batch.
• Virtual DOM: Function components with efficient diffing and reconciliation.
• Client-side router: Path parameters, query parsing, Link component, and programmatic navigation.
• Context API: Share state across the component tree with create_context and use_context.
• Forms and validation: Built-in form state management with validators and two-way bindings.
• Flow control primitives: Show, For, Index, Switch, Match, and Dynamic for declarative rendering.
• Error boundaries and Suspense: Graceful error handling and async loading states.
• Dev server with hot reload: wyb dev launches a local server with SSE-based auto-reload.

Quick Start

Installation

pip install wybthon

Usage

from wybthon import button, component, create_signal, div, p


@component
def Counter(initial: int = 0):
    count, set_count = create_signal(initial)

    def render():
        return div(
            p(f"Count: {count()}"),
            button("Increment", on_click=lambda e: set_count(count() + 1)),
        )

    return render

Documentation

Visit docs.wybthon.com for the full documentation, including getting started guides, core concepts, API reference, and working examples.

Contributing

Contributions are welcome. Please see CONTRIBUTING.md for setup instructions, coding standards, and guidelines for submitting pull requests.

License

MIT