instaui 0.4.2

insta-ui is a Python-based UI library for rapidly building user interfaces.

insta-ui

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📖 Introduction

insta-ui is a Python-based UI library for quickly building user interfaces.

⚙️ Features

Three modes:

• Web mode: Generate web (stateless) applications.
• Web View mode: Generate web view applications that can be packaged as native apps (no need to start a web server).
• Zero mode: Generate pure HTML files that run directly in browsers without any dependencies.

📦 Installation

Zero mode:

pip install instaui -U

web mode

pip install instaui[web] -U

Web View mode

pip install instaui[webview] -U

🖥️ Quick Start

Below is a simple example of number summation. The result color changes dynamically based on the sum:

from instaui import ui, arco
arco.use()

@ui.page('/')
def home():
    num1 = ui.state(0)
    num2 = ui.state(0)

    # Automatically recalculates result when num1 or num2 changes 
    @ui.computed(inputs=[num1, num2])
    def result(num1: int, num2: int):
        return num1 + num2

    # Automatically updates text_color when result changes
    @ui.computed(inputs=[result])
    def text_color(result: int):
        return "red" if result % 2 == 0 else "blue"

    # UI components  
    arco.input_number(num1)
    ui.text("+")
    arco.input_number(num2)
    ui.text("=")
    ui.text(result).style({"color": text_color})

# when you deploy your web application, you need to set debug=False.
ui.server(debug=True).run()

Replace ui.server().run() with ui.webview().run() to switch to Web View mode:

...

# ui.server(debug=True).run()
ui.webview().run()

To execute computations on the client side instead of the server, use ui.js_computed instead of ui.computed:

from instaui import ui, arco
arco.use()

@ui.page('/')
def home():
    num1 = ui.state(0)
    num2 = ui.state(0)

    result = ui.js_computed(inputs=[num1, num2], code="(num1, num2) => num1 + num2")
    text_color = ui.js_computed(inputs=[result], code="(result) => result % 2 === 0? 'red' : 'blue'")

    # UI components
    ...

...

In this case, all interactions will run on the client side. Use Zero mode to generate a standalone HTML file:

from instaui import ui, arco,zero
arco.use()

@ui.page('/')
def home():
    num1 = ui.state(0)
    num2 = ui.state(0)

    result = ui.js_computed(inputs=[num1, num2], code="(num1, num2) => num1 + num2")
    text_color = ui.js_computed(inputs=[result], code="(result) => result % 2 === 0? 'red' : 'blue'")

    # UI components
    arco.input_number(num1)
    ui.text("+")
    arco.input_number(num2)
    ui.text("=")
    ui.text(result).style({"color": text_color})

with zero() as z:
    home()
    z.to_html('index.html')