Modules in Python

Modules are files containing Python code (functions, classes, variables) that you can import into other files. They help organize code, avoid repetition, and make programs easier to maintain.

Python comes with a rich standard library of modules, and you can create your own.

Importing Modules

Use import to load a module.

Import Specific Names

Use from ... import to import specific items.

Aliases with as

Creating Your Own Module

Save functions in a .py file and import it.

__name__ == "__main__" Guard

Run code only when file is executed directly, not when imported.

Quick Quiz