🐍 What is __init__.py and why is it important in Python?
If you work with Python, you’ve probably seen the mysterious __init__.py file in many folders… but do you really know what it’s for?
Real Python shares an article that explains how this file plays a key role in package organization:
🔹 1. Turns folders into Python packages
Before Python 3.3, every package had to include an __init__.py.
Today it isn’t always required, but it’s still good practice to make it clear that a folder is an importable package.
🔹 2. Allows control over what gets imported
Inside __init__.py you can define:
__all__ = ["module1", "module2"]This lets you decide which modules are exposed when using from package import *.
🔹 3. Facilitates package initialization
- You can include configuration code that runs when the package is imported.
- For example, automatically loading submodules or initializing global variables.
🔹 4. Improves project organization
Having well-configured __init__.py files makes your project:
- Cleaner and easier to maintain
- More predictable for other developers
- Compatible with packaging and distribution tools
In short, __init__.py is the heart of a Python package:
It helps you structure, control, and maintain your project professionally.
More information at the link 👇
