This example demonstrates outbound HTTP from a Python Worker using synchronous Python HTTP clients known to work in the current runtime:

• requests
• urllib3
• httpx.Client

It intentionally calls their normal blocking-style APIs from inside the Worker handler.

First ensure that uv is installed: https://docs.astral.sh/uv/getting-started/installation/#standalone-installer

Run:

uv run pywrangler dev

Then try:

curl http://localhost:8787/
curl http://localhost:8787/sync

You can also deploy with:

uv run pywrangler deploy

This example is limited to synchronous package-backed clients that work in Python Workers. It does not include stdlib raw-socket clients such as urllib.request or http.client.