pytest-mock provides a mocker fixture that integrates unittest.mock.patch into pytest's lifecycle — no manual start/stop, no with blocks, no decorator ordering issues. spy preserves real behavior while tracking calls. stub tests callbacks.
How I vibe-coded CodeAtlas, a global developer ranking platform with Astro + Svelte 5 + Three.js, covering GitHub API data collection to 3D globe interaction.
Typer is a CLI framework by the FastAPI author, built on Click, but you don't need to learn Click's API. Type hints are the CLI specification — help text, shell completion, and subcommands are generated automatically.
blinker is a lightweight Python signal/event system — it's what Flask uses internally for request_started, request_finished, and other lifecycle events. Good fit for module decoupling, plugin architectures, and avoiding circular imports.
polyfactory generates test data automatically from Python type hints. Supports dataclasses, Pydantic v2, TypedDict, and msgspec. Pair it with pytest fixtures to eliminate the boilerplate of hand-crafting fake objects for every test.
The biggest difference between pytest and unittest isn't features — it's how comfortable it is to write. Plain assert works, failure messages expand automatically, and fixtures are far more flexible than setUp/tearDown.
Don't guess why your Docker image is large — use docker image history and dive to see exactly where the weight is. Fix what's actually broken. A real 1.25GB → 139MB walkthrough.
sslh is a protocol multiplexer that lets SSH, HTTPS, and OpenVPN share a single port. The most common use case: hide SSH on port 443 to get through firewalls that only allow HTTP/HTTPS.
reverse_ssh flips SSH: target machines connect back to your server, and you connect to them with standard SSH syntax. HTTP/WebSocket/TLS transports punch through firewalls. SCP, SFTP, and port forwarding all work.
yazi is an async Rust terminal file manager with vim keybindings, image preview, Lua plugins, and fzf/zoxide integration. Alacritty has no native image protocol — macOS uses Chafa, Linux uses Überzug++ with X11/Wayland.
