Topics covered in this episode:

* rathole*
* pre-commit: install with uv*
A good example of what functools.Placeholder from Python 3.14 allows
Converted 160 old blog posts with AI
Extras
Joke

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About the show

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Michael #1: rathole

A lightweight and high-performance reverse proxy for NAT traversal, written in Rust. An alternative to frp and ngrok.
Features
- High Performance Much higher throughput can be achieved than frp, and more stable when handling a large volume of connections.
- Low Resource Consumption Consumes much fewer memory than similar tools. See Benchmark. The binary can be as small as ~500KiB to fit the constraints of devices, like embedded devices as routers.
  - On my server, it’s currently using about 2.7MB in Docker (wow!)
- Security Tokens of services are mandatory and service-wise. The server and clients are responsible for their own configs. With the optional Noise Protocol, encryption can be configured at ease. No need to create a self-signed certificate! TLS is also supported.
- Hot Reload Services can be added or removed dynamically by hot-reloading the configuration file. HTTP API is WIP.

Brian #2: pre-commit: install with uv

Adam Johnson
pre-commit doesn’t natively support uv, but you can get around that with pre-commit-uv
$ uv tool install pre-commit --with pre-commit-uv
Installing pre-commit like this
- Installs it globally
- Installs with uv
- adds an extra plugin “pre-commit-uv” to pre-commit, so that any Python based tool installed via pre-commit also uses uv
Very cool. Nice speedup

Brian #3: A good example of what functools.Placeholder from Python 3.14 allows

Michael #4: Converted 160 old blog posts with AI

Carefully mapping old posts to a new archived area using NGINX config. This is just the HTTP portion, but note the /sitemap.xml and location ~ "^/([0-9]{4})/([0-9]{2})/([0-9]{2})/(.+?)/?$" { portions. The latter maps posts such as https://blog.michaelckennedy.net/2018/01/08/a-bunch-of-online-python-courses/ to https://mkennedy.codes/posts/r/a-bunch-of-online-python-courses/

server {
    listen 80;
    server_name blog.michaelckennedy.net;

    # Redirect sitemap.xml to new domain
    location = /sitemap.xml {
        return 301 <https://mkennedy.codes/sitemap.xml>;
    }

    # Handle blog post redirects for HTTP -> HTTPS with URL transformation
    # Pattern: /YYYY/MM/DD/post-slug/ -> <https://mkennedy.codes/posts/r/post-slug/>
    location ~ "^/([0-9]{4})/([0-9]{2})/([0-9]{2})/(.+?)/?$" {
        return 301 <https://mkennedy.codes/posts/r/$4/>;
    }

    # Redirect all other HTTP URLs to mkennedy.codes homepage
    location / {
        return 301 <https://mkennedy.codes/>;
    }
}

Extras

Brian:

SMS URLs and Draft SMS and iMessage from any computer keyboard from Seth Larson
Test and Code Archive is now up, see announcement

Michael:

Python: The Documentary | An origin story is out!

Joke: Do you know him? He is me.

#447 Going down a rat hole

Python Bytes