From Idea to PyPI — How I Built and Published My Own Python SDK
Have you ever installed a library with pip install and wondered — how do developers publish their own? In this post, I’ll show you how I built, tested, and published my own Python SDK — a simple, synchronous client for the OpenWeatherMap API — all the way to PyPI. You’ll learn: How to structure a reusable SDK How to use pyproject.toml for modern packaging How to test, lint, and type-check your library How to publish to both TestPyPI and PyPI ⚙️ Step 1: Plan the SDK Question Example Package name sync_openweatherapi_python_sdk Import name openweather Core purpose Simple Python wrapper for OpenWeatherMap API Dependencies requests, pydantic, python-dotenv Testing tools pytest, responses, mypy, ruff The goal is developer ergonomics: clear interfaces, typed models, and testability. ...