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Python Workers Examples

This is a collection of examples for writing Cloudflare Workers in Python. Use these examples to learn how Python Workers work.

Get started

1. git clone https://github.com/cloudflare/python-workers-examples
2. cd hello
3. npx wrangler@latest dev
4. Press the b key to open a browser tab, and make a request to your Worker

You can run npx wrangler@latest dev in any example project directory to run a local development server using Wrangler, the CLI for Cloudflare Workers. This local development server is powered by workerd, the open-source Workers runtime.

Need to deploy your Worker to Cloudflare? Python Workers are in open beta and have a few limitations.

Examples

• 01-hello/ — the most basic Python Worker
• 02-binding/ — shows how bindings work in Python Workers. Put a key into Workers KV, and then read it.
• 03-fastapi/ — demonstrates how to use the FastAPI package with Python Workers
• 04-langchain/ — demonstrates how to use the LangChain package with Python Workers

Open Beta and Limits

• Python Workers are in open beta. Currently, you can only deploy Python Workers that use the standard library. Packages cannot be deployed and will only work in local development for the time being.
• You must add the python_workers compatibility flag to your Worker, while Python Workers are in open beta.

We’d love your feedback. Join the #python-workers channel in the Cloudflare Developers Discord and let us know what you’d like to see next.

License

The Apache 2.0 license.