Cloudflare Python Workers reach general availability
Cloudflare made Python Workers generally available on 2026-09-21, making Python a first-class language on its Workers runtime via Pyodide over WebAssembly, with native platform bindings and FastAPI/Django/Flask support.
On 2026-09-21, Cloudflare announced that Python Workers are generally available, ending a roughly two-year preview and making Python a first-class, fully supported language on the Cloudflare Developer Platform. Python code runs on the server-side Workers platform via a Pyodide interpreter compiled to WebAssembly. Native bindings to Workers AI, R2, D1, Hyperdrive, Durable Objects, and Queues now handle Python-to-JavaScript type conversion automatically, eliminating error-prone glue code. Built-in workers.asgi and workers.wsgi connectors let FastAPI, Django, and Flask applications run with the Workers edge network acting as the web server, and Hyperdrive adds PostgreSQL and MySQL connectivity from Python Workers; Cloudflare's post demonstrates invoking the gpt-oss-120b model through Workers AI from a FastAPI handler. Coverage notes one limitation: multiprocessing and threading do not function in the WebAssembly VM. The two reports (Cloudflare Blog, 2026-09-21T13:00Z, and Simon Willison, 2026-09-21T22:25Z) agree on all facts; neither disputes the other.
- Announced 2026-09-21: Python Workers are generally available after a two-year preview
- Python executes on Workers via a Pyodide interpreter compiled to WebAssembly
- Native bindings to Workers AI, R2, D1, Hyperdrive, Durable Objects, and Queues perform automatic Python-to-JavaScript type conversion, removing glue code
- Built-in workers.asgi and workers.wsgi connectors support FastAPI, Django, and Flask, with the Workers edge network acting as the web server
- Hyperdrive enables PostgreSQL and MySQL access from Python Workers
- Cloudflare's example invokes the gpt-oss-120b model through Workers AI from a FastAPI handler
- Limitation: multiprocessing and threading are non-functional in the WebAssembly VM
- Sources: Cloudflare Blog (2026-09-21T13:00:00Z) and Simon Willison (2026-09-21T22:25:44Z); no factual disagreements between them
Coverage timelineoldest first · each row is one article
- · 5d agoPython Workers are now generally available
Cloudflare Blog· 20
Cloudflare made Python Workers generally available, adding native platform bindings plus FastAPI, Django, and Flask support without JavaScript glue code.
- · 5d agoCloudflare Python Workers are now generally available
Simon Willison· 10
Cloudflare Python Workers become generally available, enabling stable Python code execution on its server-side Workers platform.