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 …

I recently put some effort into creating better-functools. It's a package that adds some tooling for functional programming in Python. And allows us to write some unique looking code in a manner similar to functional languages:

Try in sandbox

Why?

At a glance this doesn't look very "Pythonic". More complex …

This one has frustrated me for a while.

It starts off with a REST API route. For example in fastAPI

@app.get("/")
def search_users(session: Session) -> list[User]:
    """Finds users optionally filter by user_id"""
    statement = select(User).order_by(User.name)
    return session.execute(statement).scalars().all()

Then we get asked …

Structural pattern matching is probably the coolest new syntax introduced to Python. Added in 3.10, it's been a few years now and more people are writing apps in 3.10* than any other version now.

Though even with the wide adoption of 3.10 and more people being exposed …

Introduction

I wrote about free-threading recently in How free are threads in Python now?. Where I found some unexpected difficulties parallelising my solution.

In the conclusion section I wrote:

I'm starting to think that the approach sub-interpreters is taking, with brand new concurrency primitives and shared memory data structures has …