Cloudflare Ships Python Workers GA With FastAPI, MCP, Hyperdrive

Two years after Cloudflare introduced Python Workers as a beta, the company declared them generally available, saying Python is now "a first-class, fully supported language on the Cloudflare Developer Platform."

The pitch: you run FastAPI, Django, or Flask on the same edge runtime that already hosts JavaScript Workers, and reach the platform's bindings (Workers AI, R2, D1, Hyperdrive, Durable Objects, Queues, Workflows) directly from Python. "This allows you to utilize all Cloudflare bindings in a Pythonic way without writing a single line of JavaScript code," writes Dominik Picheta in the announcement.

The AI hook is that openai, langchain and mcp now run natively. Cloudflare ships a langchain-cloudflare package for pointing chains at its own inference. Its example gallery includes a Bluesky Jetstream WebSocket consumer wired to a Durable Object, an image-to-image generator that drops requests "into a Cloudflare Queue" and uses Workflows to orchestrate Workers AI, and a RAG system on Vectorize.

The database change is the other unlock. "Previously, Python Workers didn't support TCP sockets, making database drivers unavailable," Picheta writes. That is now fixed through the Workers Connect API: aiomysql and asyncpg reach Postgres and MySQL through Hyperdrive.

The runtime itself is Pyodide, the WebAssembly build of CPython. To make that story portable beyond Cloudflare, the company proposed PEP 783, which "standardizes a platform for running Python in browser runtimes called PyEmscripten"; the PEP was accepted after more than a year of discussion. The post does not publish cold-start, package-size, or memory numbers. It lands during a busy week for edge infrastructure in our AI infrastructure tracker.