Update Overview for Python Workers to also show usage of pywrangler

[sjsadowski]

Existing documentation URL(s)

https://developers.cloudflare.com/workers/languages/python/

What changes are you suggesting?

The overview has a note:

You must add the python_workers compatibility flag to your Worker, while Python Workers are in open beta. Packages are supported using the pywrangler tool.

However the normal wrangler tool is used for the overview, leading to confusion. The differences between using wrangler and pywrangler should be highlighted and examples given showing the use of pywrangler as even in the Packages section, the only information is that you can use pywrangler and the basics of the pyproject.toml changes.

Additional information

Creating this so it doesn't get lost. Will likely submit PR for it myself.

[mitchins]

More importantly, you must delete the cf-requirements.txt from the example or it fails to deploy even locally with uv pywrangler.

I'm only using FastAPI, yet it's choking on startup when deploying remotely. (CPU time exceeded)

[mitchins]

I've got this summed up pretty well in my micro web-framework Kinglet - Cloudflare Demo

While FastAPI can install, it's too big once you include pydantic and everything else it needs (12mb of modules). The worker CPU execution limit is hit (presumably choking on modules).