PyWry: Cross-Platform Rendering Engine in Python

One-liner with uv to try this out:

  uv run --with pywry python <<'EOF'
  app = PyWry()
  
  def on_button_click(data, event_type, label):
      """Called when the button is clicked."""
      app.emit("pywry:set-content", {"id": "greeting", "text": "Button was clicked!"}, label)
  
  html = """
  <div style="padding: 20px; text-align: center;">
      <h1 id="greeting">Click the button below</h1>
      <button onclick="window.pywry.emit('app:button-click', {time: Date.now()})">
          Click me!
      </button>
  </div>
  """
  
  app.show(
      html,
      callbacks={"app:button-click": on_button_click},
  )
  app.block()
  EOF

Looks promising. Here's a screenshot: https://gist.github.com/simonw/092386c894d3a0deb2572f3155552...

This cross platform rendering engine’s website doesn’t render well at all on Safari on the iPhone.

This cross platform rendering engine’s website doesn’t render well at all on Chrome on Android

Interesting, I've been using Flet for my projects lately, and I've been very happy for desktop environments. Never tried it on web and phone platforms, but Flet has similar run-everywhere marketing which originally drew me in. Anyone know how PyWry differs from Flet?

Maybe I'm an old fart, but "rendering engine" used to mean 3D graphics. This is actually a cross-platform UI toolkit? Or rather a web toolkit than can be deployed to desktop via Tauri?

I had a poke around in the wheel and it looks like a lot of the heavy lifting is done by this 30.8MB binary file:

pywry/_vendor/pytauri_wheel/ext_mod.cpython-310-darwin.so

Looks like that's vendored from this project: https://github.com/pytauri/pytauri

This feels like a Rube-Goldberg kind of integration. I would love to know if there's an actual use for this opinionated stack, because I would've never guessed it.

Interesting project. The examples page needs screenshots.

Site is rendered extremely poorly on Firefox Mobile.