PEP-734 subinterpreters in the stdlib has officially been included in the Python 3.14 as a very late addition. subinterpreters now has a new home in the standard library module called concurrent.interpreters.

If you've been following my blog posts you'll know that I'm particularly excited about this feature.

• How …

Python 3.14 is just around the corner and it's jampacked with huge updates:

• Free threading and multiple interpreters?
• Template strings

But as with any release, there are many nice smaller and less noticeable features. Features you won't see unless you comb through the entire release notes. Luckily I am …

I grew up in both the UK and China. So I'd like to think I have a little understanding of both cultures. China uses both the western gregorian calendar and a version of lunar calendar called 农历. This means I have a Chinese lunar birthday as well as a …

There's mixed feedback to Asyncio in the community. Some people passionately hate it whilst others believe "writing async make program go fast". This debate is way too much for me to cover here right now. Though maybe I'll look at it in the future.

For me I use asyncio a …

Short update since First Look at MCP. Docker has released it's MCP toolkit which includes a catalog of MCP servers as well as helpers to connect to the MCP clients.

It is exceeding easy to use it, docker is registered as a single MCP server for your client. And tools …

Previously I've played with tool calling in Langchain and Python sandboxes. But recently MCP (Model Context Protocol) is front and center. So I tried to create my own github MCP in Python to integrate cursor with the github cli.

What is MCP?

Before we get started, its good to familiarise …

In my posts earlier this year I talked about the parallelism performance on 3.13 free-threaded builds. In particular I looked at solving an advent of code problem. In How free are threads in Python now? I discovered significant performance penalties for using free-threading and a lack of tooling available …

This one's hot off the press as the first beta for Python 3.14 (aka. π-thon) has hit. We're looking at a chunky release with a lot of new features. But all I can think about are these new template strings (officially t-strings).

PEP-750 officially introduces the concept. The idea …

You're probably thinking that there are already plenty of tools written in Python.

But I see that most of the popular tools like mypy and flake8 are built for development environments. In contrast, general purpose cli tools tend to be built in other languages, for example most of the docker …

I've been a little obsessed with operator overloading lately. First using |= in sqlalchemy-builder and then using | and @ in better-functools.

I didn't actually know that these qualify as DSLs, specifically what's known as "internal DSLs". Funnily enough, I'm usually not a fan of DSLs. A few reasons come to mind:

• DSLs …