PyScript Let Users to Run Python Programs in the Browser

The Founder of Anaconda, Peter Wang revealed a new project “PyScript” at PyCon US 2022. Specifically, this project facilitates Python to take a serious step towards making programming and data science more accessible to everyone.

“PyScript is a framework that allows users to create rich Python applications in the browser using a mix of Python with standard HTML. It aims to give users a first-class programming language that has consistent styling rules, is more expressive, and is easier to learn”, reads the blog post published by Anaconda.

The Core Components of PyScript:

PyScript is just HTML, more powerful that includes a rich and accessible ecosystem of Python libraries. The key components include:

• Facilitate drop-in content, external file hosting (via Pyodide project)
• Allows using Python and its vast ecosystem of libraries (including numpy, pandas, scikit-learn) from within the browser.
• Bi-directional communication between Python and Javascript objects and namespaces.
• Environment management helps users to decide which packages and files to include for the page code to run.
• Allows creating curated UI components, such as buttons, containers, and more.
• Flexible framework to create and share newly pluggable and extensible components directly in Python.

Therefore, PyScript offers a clean and simple API, supports standard HTML, extends HTML to read custom components that are opinionated and reliable, and also provides a pluggable and extensible components system.

Working with PyScript:

To try PyScript, import the appropriate pyscript files to your html page with:

<link rel=”stylesheet” href=”https://pyscript.net/alpha/pyscript.css” />

<script defer src=”https://pyscript.net/alpha/pyscript.js”></script>

• <py-script>: Used to define python code that is executable within the web page. The element itself is not rendered to the page and only used to add logic.
• <py-repl>: Creates a REPL component that is rendered to the page as a code editor and allows users to write code that can be executed.

Therefore, PyScript supports writing and running Python code in a browser. The objective for the future is that it will also provide support for other languages.

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