Python Package

A Python package is a directory-based organizational structure used to group related Python modules under a common namespace. To be recognized as a valid package by Python’s import system, the directory must contain an __init__.py file. This file serves as the package’s entry point, allowing it to define available symbols, execute initialization code, and configure package-level settings when imported.

Python packages are primarily distributed through the Python Package Index (PyPI), which acts as the central repository for third-party software. Developers utilize the pip package installer to download, install, and manage these packages from PyPI or other compatible repositories. This tool handles dependencies and ensures that packages are correctly placed within the Python environment for immediate use.

Modern Python versions also support namespace packages, which allow modules to be split across multiple directories without requiring an __init__.py file. This feature enables the creation of packages that span multiple distribution channels or physical locations, facilitating more flexible modular development and integration of components from different sources.

Source Notes

  • 2026-04-07: Bonsai 8B: PrismML
  • 2026-04-10: Bonsai 8B PrismMLs Revolutionary 1 Bit LLM First Look Test · ▶ source