Coding tutorials
Python, JavaScript, Git, Docker and Linux, step by step, with examples you can run.
Coding tutorialsOct 14, 2026 · 8 min
How to Create and Activate a Python Virtual Environment
Create, activate and deactivate a Python venv on Windows, macOS and Linux, install packages, use requirements.txt, and fix the usual mistakes.
Coding tutorialsOct 14, 2026 · 7 min
How to Use the OpenAI API in Python: Examples You Can Run
Install the official SDK, set your API key from the environment, make a first request, and handle errors in Python, with code you can copy.