• If you're interested in learning how to use Mesop, please read our main docs.

• If you're interested in contributing to the core Mesop framework, please read our contributing guide.

Mesop is a Python-based UI framework that allows you to rapidly build web apps like demos and internal apps:

Intuitive for UI novices ✨

• Write UI in idiomatic Python code
• Easy to understand reactive UI paradigm
• Ready to use components

Frictionless developer workflows 🏎️

• Hot reload so the browser automatically reloads and preserves state
• Rich IDE support with strong type safety

Flexible for delightful demos 🤩

• Build custom UIs without writing Javascript/CSS/HTML
• Compose your UI into components, which are just Python functions

Demo app

import time

import mesop as me
import mesop.labs as mel


@me.page(path="/text_to_text", title="Text I/O Example")
def app():
  mel.text_to_text(
    upper_case_stream,
    title="Text I/O Example",
  )


def upper_case_stream(s: str):
  yield s.capitalize()
  time.sleep(0.5)
  yield "Done"

You can try Mesop on Colab!

Step 1: Install it

$ pip install mesop

Step 2: Copy the example above into main.py

Step 3: Run the app

$ mesop main.py

Learn more in Getting Started.

This is not an officially supported Google product.