pyodide VS CPython

Compare pyodide vs CPython and see what are their differences.

pyodide

Pyodide is a Python distribution for the browser and Node.js based on WebAssembly (by iodide-project)
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pyodide CPython
67 1,314
11,397 59,531
2.8% 1.6%
9.7 10.0
4 days ago 6 days ago
Python Python
Mozilla Public License 2.0 GNU General Public License v3.0 or later
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

pyodide

Posts with mentions or reviews of pyodide. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-04-22.
  • Py2wasm – A Python to WASM Compiler
    4 projects | news.ycombinator.com | 22 Apr 2024
    We implemented an in-browser Python editor/interpreter built on Pyodide over at Comet (our users are data scientists who need to build custom visualizations quite often, and the most familiar language for most of them is Python).

    One of the issues you'll run into is that Pyodide only works by default with packages that have pure Python wheels available. The team has developed support for some libraries with C dependencies (like scikit-learn, I believe), but frameworks like PyTorch are particularly thorny (see this issue: https://github.com/pyodide/pyodide/issues/1625 )

    We ended up rolling out a new version of our Python visualizations that runs off-browser, in order to support enough libraries/get the performance we need: https://www.comet.com/docs/v2/guides/comet-ui/experiment-man...

  • Show HN: Open-source, browser-local data exploration using DuckDB-WASM and PRQL
    11 projects | news.ycombinator.com | 15 Mar 2024
    Thank you! Yes, one of the items in the Roadmap is support for Pyodide (https://github.com/pyodide/pyodide) for running in-browser python on the results of each of the code blocks! This should allow most ML libs to be usable in-browser! This is pretty high-up on our priority list.
  • Show HN: Marimo – open-source reactive Python notebook – running in WASM
    3 projects | news.ycombinator.com | 29 Feb 2024
  • Why Are Tech Reporters Sleeping on the Biggest App Store Story?
    6 projects | news.ycombinator.com | 2 Jan 2024
    If I understand correctly, WASM only makes sense for compiled languages, you can run the python interpreter in WASM of course[1], but that will be at a significant performance disadvantage to the native javascript interpreter, and it's also something that has to be loaded every time you load the website.

    [1]: https://github.com/pyodide/pyodide

  • Rewrite Sympy in rust
    2 projects | /r/rust | 11 Nov 2023
    If you absolutely need something comparable to Sympy, then one option might be to figure out how to best call Sympy from Rust. e.g. - RustPython, although it seems like Sympy isn't supported yet - Pyodide, and figuring out how to run it outside of a web browser. Probably also not very easy. - PyPy, and having a pretty simple Python binary for every platform - ...
  • IT department refuses to let me install Python and other programs/languages I need for my job.
    2 projects | /r/webdev | 19 Jun 2023
    For running programming languages other than JavaScript in the browser there is Emscripten and WebAssembly. There is v86, where a Linux build is compiled to WASM. Folks have written QuickJS into a Linux build compiled to WASM, Node.js into the Linux buildroot https://github.com/cemalgnlts/now, so Python or CPython can be written to the image and loaded into the browser as WASM as well https://github.com/pyodide/pyodide.
  • Python CLI Live Demo?
    1 project | /r/learnpython | 31 May 2023
  • Graphs in Python web app
    5 projects | /r/Python | 28 Mar 2023
    There's a Python runtime that runs on WebAssembly (https://github.com/pyodide/pyodide). I have no idea what it's like, I've never used it.
  • Sunday Daily Thread: What's everyone working on this week?
    7 projects | /r/Python | 25 Mar 2023
    Still in a quest to provide some tooling to quickly compose documentation websites: https://github.com/synw/docdundee . As I have tons of libs to document and was tired of managing restructured language for readthedocs I started with this, and now it has executable Python examples in the frontend via a Pyodide wrapper composable: usePython
  • Introducing scikit-learn-ts: A powerful machine learning library for TS, auto-generated and powered by Python's #1 ML library
    3 projects | /r/typescript | 13 Mar 2023
    This project's brand new and a lil hacky, but I've already reached out to the scikit-learn team, and they recommended that I experiment with using Pyodide as an alternative backend for the Python bridge.

CPython

Posts with mentions or reviews of CPython. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-04-25.
  • scrape-yahoo-finance
    3 projects | dev.to | 25 Apr 2024
    Web Scraping Tool Development: Develop a Python based web scraping tool capable of extracting data from targeted web pages on Yahoo Finance and presenting the data extracted in a readable format. Our target site relies on AJAX to load and update the data dynamically so we will need a tool that is capable of processing JavaScript.
  • Employee Management System using Python.
    2 projects | dev.to | 21 Apr 2024
    Dealing with piles of papers or scattered Excel sheets for employee information can be a real headache, right? Well, what if I told you there's a smoother way to handle all that? A system that lets you easily store, update, and find details about your employees in just a few clicks. Sounds neat, doesn't it? In this article, we're going to explore creating an employee management system using Python, Tkinter, and SQLite3.
  • Build a Product Receipt Generator using Python.
    1 project | dev.to | 20 Apr 2024
    Python is a versatile tool, and today we're delving into a practical use case that can simplify your daily routines. With the datetime module at your disposal, handling dates and times becomes a breeze, making it perfect for crafting accurate and dynamic product receipts. Whether you're a seasoned Python pro or just starting your coding journey, this article will guide you through each step with ease.
  • Build a Music Player with Python
    2 projects | dev.to | 20 Apr 2024
    When working in Visual Studio Code (VS Code), create a new Python file for our music player project. It's helpful to have separate files for different parts of your project.
  • PEP 744 – JIT Compilation
    1 project | news.ycombinator.com | 18 Apr 2024
    > It provides a meaningful performance improvement for at least one popular platform (realistically, on the order of 5%).

    At first it will not provide a large boost, but it will set the foundations for larger gains in subsequent releases. They link a list of some proposed improvements already underway, with improvement estimates, at https://github.com/python/cpython/issues/115802

  • Featured Mod of the Month: Phil Ashby
    2 projects | dev.to | 16 Apr 2024
    After that, with the basics of software engineering understood, I would move on to a wider use language, with a bigger ecosystem to employ, most likely Python. This would expose me to large system design / distributed systems and architectural challenges...
  • Convert Images Into Pencil Sketch
    2 projects | dev.to | 11 Apr 2024
    Have you ever felt like your photos needed a little extra touch to stand out? Well, get ready because we're about to learn a cool Python trick! We're going to take ordinary photos and turn them into awesome pencil sketches using Python and OpenCV. This will make your pictures look like they were drawn by hand!
  • Crafting an Image to PDF Converter App Using Python
    1 project | dev.to | 11 Apr 2024
    Have you ever found yourself in a situation where you needed to convert a bunch of images into a PDF file quickly and efficiently? Imagine the convenience of converting a series of images from your recent trip into a single PDF album with just a few clicks. In this article, we will cover the process of building an Image PDF Converter App using Python. With the help of libraries like tkinter, os, and Python Imaging Library (PIL), we'll walk through the process of creating a powerful tool that can streamline this task for you.
  • Calculator with GUI Using Python Tkinter
    1 project | dev.to | 11 Apr 2024
    If you've ever wanted to learn how to use Python or if you already know a bit and want to try something new, then you're in the right place! In this article, we'll show you step-by-step how to make your very own calculator using Python's Tkinter library, a renowned Python library for creating graphical user interfaces. Tkinter stands out for its simplicity, versatility, and widespread use in the Python community. It doesn't matter if you're a total beginner or an experienced coder looking for a fun project, we'll guide you through everything you need to know.
  • Back to Basics - Pandas #1
    1 project | dev.to | 9 Apr 2024
    Pandas is an open source, BSD-licensed library providing high-performance, easy-to-use data structures and data analysis tools for the Python programming language.

What are some alternatives?

When comparing pyodide and CPython you can also consider the following projects:

brython - Brython (Browser Python) is an implementation of Python 3 running in the browser

RustPython - A Python Interpreter written in Rust

pyscript - Try PyScript: https://pyscript.com Examples: https://tinyurl.com/pyscript-examples Community: https://discord.gg/HxvBtukrg2

ipython - Official repository for IPython itself. Other repos in the IPython organization contain things like the website, documentation builds, etc.

Vulpix - Fast, unopinionated, minimalist web framework for .NET core inspired by express.js

streamlit - Streamlit — A faster way to build and share data apps.

Visual Studio Code - Visual Studio Code

Transcrypt - Python 3.9 to JavaScript compiler - Lean, fast, open! -

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PyWebIO - Write interactive web app in script way.

Pandas - Flexible and powerful data analysis / manipulation library for Python, providing labeled data structures similar to R data.frame objects, statistical functions, and much more