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JustPy Hello World

JustPy Tutorial​

JustPy is a Python library for creating interactive web applications. It allows you to build web applications using only Python code, without the need for HTML, CSS, or JavaScript. JustPy combines the simplicity of Python with the power of web development.

Official website: https://justpy.io/

History​

JustPy was created by Faris Masad in 2020 as a way to simplify web development using Python. It was designed to be easy to learn and use, while still providing powerful features for creating modern web applications.

Features​

JustPy comes with a wide range of features that make it a powerful tool for web development:

  1. Pythonic syntax: JustPy uses a Pythonic syntax, allowing you to write web applications using familiar Python code.
  2. Component-based architecture: JustPy follows a component-based architecture, making it easy to build reusable and modular components.
  3. Interactive: JustPy allows you to build interactive web applications with real-time updates, without the need for manual page refreshes.
  4. Event-driven programming: JustPy supports event-driven programming, allowing you to define actions that are triggered by user interactions or other events.
  5. Integrated charting: JustPy provides built-in support for creating interactive charts and graphs, making it easy to visualize data.
  6. Deployment options: JustPy can be deployed as a standalone web server, or integrated into existing web frameworks such as Flask or Django.

Hello World Example​

Let's start with a simple "Hello World" example to get a feel for how JustPy works.

  1. Install JustPy using pip:

    $ pip install justpy

  2. Create a new Python file, hello_world.py, and import the justpy module:

    import justpy as jp

  3. Define a function that will be called when the web page is loaded:

    def hello_world():
        wp = jp.WebPage()
        jp.Hello(text='Hello, World!', a=wp)
        return wp

  4. Start the JustPy web server and open the web page in your browser:

    jp.justpy(hello_world)

  5. Run the Python file:

    $ python hello_world.py

You should see a web page with the text "Hello, World!" displayed.

Comparison with Alternatives​

JustPy offers a unique approach to web development compared to traditional web frameworks like Flask or Django. Here are some points of comparison:

  • Simplicity: JustPy simplifies web development by allowing you to write everything in Python, eliminating the need to learn HTML, CSS, or JavaScript. This can be a major advantage for developers who are more comfortable with Python.

  • Interactivity: JustPy provides built-in support for real-time updates and event-driven programming, making it easy to build interactive web applications. This can be a major advantage over traditional web frameworks, which may require manual page refreshes or complex JavaScript code.

  • Charting: JustPy includes integrated charting capabilities, allowing you to easily create interactive charts and graphs. This can be a major advantage for applications that require data visualization.

That's it! You now have a basic understanding of JustPy, its history, features, and how to create a "Hello World" example. Have fun exploring the possibilities of JustPy for your web development projects!