Cloudflare Python Workers go generally available after two-year preview
Simon Willison · rss · 2026-09-22
After a two-year preview, Cloudflare's Python Workers are now generally available, making Python a first-class language on the Cloudflare Developer Platform. It works by compiling Python to WebAssembly via Pyodide inside the V8-based workerd runtime, with notable limitations: multiprocessing and threading don't work in the WASM VM. The local dev tool pywrangler (packaged as workers-py on PyPI) fully simulates the stack locally. The release credits Gyeongjae Choi, Dominik Picheta, and Hood Chatham — two of whom are Pyodide core maintainers — signaling a significant Cloudflare investment in the Python ecosystem.
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