Creating Your Own Python Module

A Python module can be as simple as a separate .py file containing code you want to reuse. This Block shows you how to move related helper functions out of a growing program, import them into another file, and keep your code easier to understand and maintain.

What you will learn:

• Create a custom module as a separate Python file
• Import a whole module with import module
• Call functions clearly with the module.function() prefix
• Import specific functions with from module import function
• Group related helpers and choose clear module names
• Move functions into a module without changing program behavior
• Avoid common mistakes such as mismatched filenames, missing prefixes, and unwanted output during imports

By the end, you will be able to split a small Python program into focused files and reuse your own functions with the same import tools you already use for built-in modules.