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First draft of comprehensive user-guide re-write. TODO: check example apps again.
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‎docs/beginning-pyscript.md‎

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‎docs/example-apps/bouncing-ball/game.py‎

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"""
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Bouncing Ball - PyGame-CE demo for PyScript.
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Based on the PyGame-CE quickstart tutorial.
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"""
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import asyncio
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import sys
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import pygame
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pygame.init()
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size = width, height = 320, 240
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speed = [2, 2]
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black = 0, 0, 0
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screen = pygame.display.set_mode(size)
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ball = pygame.image.load("intro_ball.gif")
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ballrect = ball.get_rect()
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while True:
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for event in pygame.event.get():
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if event.type == pygame.QUIT:
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sys.exit()
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ballrect = ballrect.move(speed)
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if ballrect.left < 0 or ballrect.right > width:
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speed[0] = -speed[0]
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if ballrect.top < 0 or ballrect.bottom > height:
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speed[1] = -speed[1]
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screen.fill(black)
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screen.blit(ball, ballrect)
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pygame.display.flip()
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await asyncio.sleep(1/60)

‎docs/example-apps/bouncing-ball/index.html‎

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width,initial-scale=1.0">
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<title>PyGame-CE Bouncing Ball</title>
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<link rel="stylesheet" href="https://pyscript.net/releases/2025.11.2/core.css">
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<script type="module" src="https://pyscript.net/releases/2025.11.2/core.js"></script>
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<style>
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body {
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font-family: system-ui, sans-serif;
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max-width: 600px;
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margin: 2rem auto;
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padding: 1rem;
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text-align: center;
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}
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canvas {
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border: 2px solid #333;
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border-radius: 4px;
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margin: 1rem 0;
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image-rendering: pixelated;
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}
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</style>
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</head>
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<body>
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<h1>Bouncing Ball</h1>
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<p>A simple PyGame-CE demo running in the browser.</p>
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<canvas id="canvas"></canvas>
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<script type="py-game" src="./game.py" config="./pyscript.toml"></script>
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</body>
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</html>

‎docs/example-apps/bouncing-ball/info.md‎

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# Bouncing Ball
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A simple PyGame-CE demonstration running in the browser with PyScript.
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Based on the
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[PyGame-CE quickstart tutorial](https://pyga.me/docs/tutorials/en/intro-to-pygame.html).
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## What it shows
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- Running PyGame-CE in the browser with the `py-game` script type.
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- Using `await asyncio.sleep()` for frame timing in the browser.
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- Loading game assets through PyScript configuration.
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- Basic game loop with collision detection.
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## How it works
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The game initialises a pygame display, loads a ball image, and runs an
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infinite game loop. Each frame, it updates the ball position, checks for
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wall collisions (reversing speed on impact), renders the scene, and
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yields control to the browser with `await asyncio.sleep(1/60)`.
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The `await` at the top level works because PyScript provides an async
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context. This wouldn't run in standard Python without wrapping in an
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async function.
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## Required files
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You'll need to download `intro_ball.webp` from the PyGame-CE repository:
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https://raw.githubusercontent.com/pygame-community/pygame-ce/80fe4cb9f89aef96f586f68d269687572e7843f6/docs/reST/tutorials/assets/intro_ball.gif
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Place it in the same directory as the other files.
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## Running locally
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Serve the files with any web server:
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```sh
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python -m http.server 8000
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```
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Then visit `http://localhost:8000/` in your browser.

‎docs/example-apps/bouncing-ball/intro_ball.gif‎

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‎docs/example-apps/bouncing-ball/pyscript.toml‎

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[files]
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"intro_ball.gif" = ""

‎docs/example-apps/colour-picker/index.html‎

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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8" />
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<meta name="viewport" content="width=device-width,initial-scale=1" />
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<title>Interactive Colour Picker</title>
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<link rel="stylesheet" href="https://pyscript.net/releases/2025.11.2/core.css">
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<script type="module" src="https://pyscript.net/releases/2025.11.2/core.js"></script>
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<style>
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body {
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font-family: system-ui, -apple-system, sans-serif;
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max-width: 800px;
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margin: 2rem auto;
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padding: 0 1rem;
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background: #f5f5f5;
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}
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h1 {
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color: #333;
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margin-bottom: 2rem;
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}
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.container {
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background: white;
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padding: 2rem;
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border-radius: 8px;
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box-shadow: 0 2px 4px rgba(0,0,0,0.1);
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}
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.colour-display {
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width: 100%;
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height: 200px;
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border-radius: 8px;
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margin-bottom: 2rem;
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transition: background-color 0.3s;
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display: flex;
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align-items: center;
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justify-content: center;
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font-size: 2rem;
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font-weight: bold;
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color: white;
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text-shadow: 0 2px 4px rgba(0,0,0,0.3);
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}
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.controls {
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display: grid;
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gap: 1rem;
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}
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.control-group {
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display: flex;
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align-items: center;
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gap: 1rem;
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}
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.control-group label {
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min-width: 80px;
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font-weight: 500;
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}
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.control-group input[type="range"] {
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flex: 1;
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}
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.control-group input[type="number"] {
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width: 70px;
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padding: 0.5rem;
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border: 2px solid #ddd;
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border-radius: 4px;
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text-align: center;
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}
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.hex-input {
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width: 100%;
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padding: 0.75rem;
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border: 2px solid #ddd;
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border-radius: 4px;
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font-family: monospace;
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font-size: 1.1rem;
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text-transform: uppercase;
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}
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.presets {
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display: grid;
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grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
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gap: 0.5rem;
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margin-top: 1.5rem;
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}
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.preset-btn {
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padding: 1rem;
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border: 2px solid #ddd;
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border-radius: 4px;
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cursor: pointer;
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transition: all 0.2s;
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text-align: center;
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font-size: 0.9rem;
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}
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.preset-btn:hover {
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transform: translateY(-2px);
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box-shadow: 0 4px 8px rgba(0,0,0,0.1);
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}
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.history {
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margin-top: 1.5rem;
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}
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.history h3 {
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margin-bottom: 0.5rem;
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}
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.history-colours {
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display: flex;
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gap: 0.5rem;
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flex-wrap: wrap;
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}
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.history-colour {
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width: 50px;
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height: 50px;
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border-radius: 4px;
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cursor: pointer;
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border: 2px solid #ddd;
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transition: transform 0.2s;
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}
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.history-colour:hover {
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transform: scale(1.1);
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}
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</style>
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</head>
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<body>
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<h1>Interactive Colour Picker</h1>
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<div class="container">
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<div class="colour-display" id="colour-display">#3498DB</div>
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<div class="controls">
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<div class="control-group">
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<label for="red-slider">Red:</label>
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<input type="range" id="red-slider" min="0" max="255" value="52" />
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<input type="number" id="red-value" min="0" max="255" value="52" />
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</div>
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<div class="control-group">
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<label for="green-slider">Green:</label>
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<input type="range" id="green-slider" min="0" max="255" value="152" />
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<input type="number" id="green-value" min="0" max="255" value="152" />
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</div>
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<div class="control-group">
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<label for="blue-slider">Blue:</label>
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<input type="range" id="blue-slider" min="0" max="255" value="219" />
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<input type="number" id="blue-value" min="0" max="255" value="219" />
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</div>
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<div class="control-group">
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<label for="hex-input">Hex:</label>
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<input type="text" id="hex-input" class="hex-input" value="#3498DB" />
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</div>
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</div>
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<div class="presets">
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<button class="preset-btn" data-colour="#E74C3C" style="background-color: #E74C3C; color: white;">Red</button>
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<button class="preset-btn" data-colour="#3498DB" style="background-color: #3498DB; color: white;">Blue</button>
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<button class="preset-btn" data-colour="#2ECC71" style="background-color: #2ECC71; color: white;">Green</button>
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<button class="preset-btn" data-colour="#F39C12" style="background-color: #F39C12; color: white;">Orange</button>
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<button class="preset-btn" data-colour="#9B59B6" style="background-color: #9B59B6; color: white;">Purple</button>
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<button class="preset-btn" data-colour="#1ABC9C" style="background-color: #1ABC9C; color: white;">Teal</button>
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</div>
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<div class="history">
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<h3>Recent Colours</h3>
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<div id="history-colours" class="history-colours"></div>
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</div>
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</div>
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<script type="mpy" src="./main.py"></script>
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</body>
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</html>

‎docs/example-apps/colour-picker/info.md‎

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# Interactive Colour Picker
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A colour picker application demonstrating various event handling
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patterns in PyScript.
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## What it demonstrates
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**Multiple event types:**
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- `input` events - RGB sliders update in real-time.
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- `change` events - Number inputs and hex input.
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- `click` events - Preset buttons and history colours.
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**Stacked decorators:**
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- Single function handling multiple sliders with `@when` stacked three
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times.
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**Custom events:**
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- `colour_changed` Event for decoupling colour updates from history
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management.
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- Shows how to separate concerns in your application.
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**Working with form inputs:**
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- Range sliders, number inputs, text inputs.
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- Synchronising values across different input types.
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- Validating and clamping values.
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**Dynamic UI updates:**
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- Updating display colour.
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- Maintaining colour history.
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- Creating history elements dynamically.
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## Features
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- Adjust colours using RGB sliders.
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- Enter RGB values directly with number inputs.
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- Enter hex colour codes.
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- Quick selection from preset colours.
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- Colour history (last 10 colours).
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- Click history to restore colours.
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- Real-time colour display with hex code.
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## Files
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- `index.html` - Page structure and styling.
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- `main.py` - Event handling logic demonstrating various patterns.
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## Key patterns demonstrated
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### Stacking decorators
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```python
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@when("input", "#red-slider")
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@when("input", "#green-slider")
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@when("input", "#blue-slider")
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def handle_slider_change(event):
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# Single function handles all three sliders.
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pass
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```
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### Custom events for decoupling
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```python
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# Define custom event.
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colour_changed = Event()
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# Trigger it when colour updates.
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colour_changed.trigger(hex_colour)
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# Handle it separately.
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@when(colour_changed)
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def handle_colour_changed(hex_colour):
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add_to_history(hex_colour)
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```
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### Working with form inputs
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```python
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@when("input", "#red-slider")
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def handle_slider_change(event):
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# Get value from slider.
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value = int(event.target.value)
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# Update display.
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update_display(value)
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```
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## Running locally
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Serve these files from a web server:
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```bash
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python3 -m http.server
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```
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Then open http://localhost:8000 in your browser.

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