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cloud.google.com·7h ago
Data Science
Simon Willison's Blog·21d ago·5 min read
Cloudflare Python Workers are now generally available
TL;DR
Cloudflare has launched Python Workers, allowing developers to run Python code on their server-side platform. This marks Python as a fully supported language, enhancing the Cloudflare Developer Platform.
✦ Why It Matters
Start using Cloudflare Python Workers today to enhance your server-side applications with Python functionality.
Key Takeaways
- Explore Cloudflare Python Workers for server-side applications.
- Utilize pywrangler for local development simulations.
- Be aware of multiprocessing limitations in Python Workers.
- Leverage familiar Python libraries in your Cloudflare projects.
Full Summary
After a two-year preview, Cloudflare's Python Workers are now generally available, enabling developers to execute Python code in their server-side Workers environment. This functionality is powered by Pyodide, which compiles Python to WebAssembly, allowing it to run within Cloudflare's V8-based workerd runtime.
The introduction of Python as a first-class language means developers can leverage familiar Python libraries and frameworks in their applications. However, there are limitations, particularly regarding multiprocessing capabilities.
For local development, Cloudflare provides a tool called pywrangler, packaged as workers-py on PyPI, which simulates the entire stack locally, including the execution of Python code in WebAssembly. This local environment is encapsulated in a 123MB workerd binary, facilitating easier testing and development for engineers.