A simpler way to build desktop GUIs

Python Web Engine

Design your interface in HTML and CSS, then wire its controls directly to Python. PyWee keeps the GUI and Python together in one trusted local app—no separate backend service or custom API between your screen and your logic.

Get started Explore examples

$python3 -m pip install pyweeGUI and logic together.

pywee://pid-simulator

main.pyindex.html

from browser import document self.simulate_button = document.querySelector("#simulate")self.chart = document.querySelector("#chart") def render(self, event=None):  samples = self.simulator.run(self.parameters())  self.chart.innerHTML = self._svg(samples) self.simulate_button.addEventListener("click", self.render)

Direct Python controls

01 Connect the interface

Why PyWee

The features make sense when you see them work.

Each runnable example demonstrates one part of the same idea: use the web to design the interface and use Python to make it behave.

pywee://controls

Component catalogPython frontend controls

Python running

Text inputName field

Operator

SliderIntensity

72%

TogglesState switches

Enabled

armed

ButtonsActions

ApplyReset

Applied 3 times

01 · Direct controls

Add a control in HTML. Handle it directly in Python.

Use an ordinary input, button, select, or slider. Find it from Python, attach an event listener, and update its state—without creating a backend endpoint or learning a custom widget toolkit.

Sourcemain.py

slider = document.querySelector("#intensity-slider")
output = document.querySelector("#intensity-output")

def render(event=None):
    output.textContent = f"{slider.value}%"

slider.addEventListener("input", render)

Open the controls example

pywee://tic-tac-toe

GameTic-tac-toe against Python

Python running

Your turnMake your move.

Python responds with a minimax opponent.

New game

XOXOX

02 · Web-native design

Design the whole experience with HTML and CSS.

The board, typography, visual states, and responsive layout are normal web design. Python stays focused on the game state, win detection, DOM events, and the minimax opponent.

Sourcemain.py

self.cells = document.querySelectorAll(".cell")

for cell in self.cells:
    cell.addEventListener("click", self.play)

def play(self, event):
    index = int(event.currentTarget.dataset.index)
    self.board[index] = "X"
    self.render()

Open the tic-tac-toe example

Designed for local software

From a quick tool to a complete desktop experience.

PyWee is made for trusted applications: internal tools, dashboards, control panels, visualizations, simulations, and interfaces that need direct access to the Python ecosystem. A managed Chromium runtime keeps rendering predictable across installations.

See how the runtime works

01Tools & utilities

02Data & dashboards

03Control interfaces

04Creative experiments

Start building

Build the interface. Wire it straight to Python.

Read the guide