Drafter

Drafter turns the Python you already know into real, interactive websites. Write plain functions, decorate them with @route, and Drafter serves the pages they return as a website you can click through, test, and publish for free.

from drafter import *
from dataclasses import dataclass


@dataclass
class State:
    clicks: int


@route
def index(state: State) -> Page:
    return Page(state, [
        "You have clicked " + str(state.clicks) + " times.\n",
        Button("Click me!", "add_click"),
    ])


@route
def add_click(state: State) -> Page:
    state.clicks = state.clicks + 1
    return index(state)


start_server(State(0))

That is a complete Drafter program. Try clicking the button above, then change the code and run it again.