Python on Serghei's Blog

Advanced Python Development Workflow in Emacs

contact@serghei.pl (Serghei Iakovlev) — Tue, 26 Nov 2024 20:00:00 +0100

Introduction#

Why Emacs?#

Emacs is not just an editor — it’s an extensible platform for crafting highly personalized development environments. With tools like company, yasnippet, lsp-mode and dap-mode, Emacs transforms into a feature-rich Python IDE capable of competing with PyCharm or VS Code.

This guide explores how to evolve Emacs into a robust Python IDE. Whether you’re writing simple scripts or managing large-scale projects, you’ll find a setup that aligns with your engineering needs and reflects the power of Emacs customization.

FFI in Python: From ctypes to Rust, and the Post-GIL Future

contact@serghei.pl (Serghei Iakovlev) — Wed, 15 Mar 2023 21:06:00 +0100

Every Python program runs inside a boundary. On one side sits the interpreter — dynamic, reflective, garbage-collected. On the other side sits the operating system, the CPU, and libraries compiled to native machine code. The Foreign Function Interface is the gate between these two worlds. Understanding how that gate works, what it costs to pass through, and which tools build the best bridges is what separates a Python developer who writes fast code from one who rewrites everything in another language.

Herding Celery Tasks: Building Workflows for Sequential Task Execution

contact@serghei.pl (Serghei Iakovlev) — Fri, 08 Oct 2021 18:32:00 +0200

In this post, I’ll tackle a straightforward problem: launching a Celery task X after all tasks Y have been completed. Task X needs to take the result of all the tasks Y as an input. While it seems like a brute-force solution would be to manually store each result of task Y, it’s more interesting to achieve this using Celery without manual database manipulations or extra code.

This guide is not meant to be an exhaustive or comprehensive manual; consider it more like a cheat sheet. Throughout the article, I’ll include links to relevant documentation, and I encourage you to first check the official docs and try everything out yourself. If you notice any inaccuracies or have suggestions for additions, feel free to reach out to me. For simplicity, I’ll use Dockerized Redis as the broker in this example, although in your particular case, the broker could be something else. For the sake of demonstration, the broker choice is not critical here.