Modules and Packages in Python

Modules and Packages in Python: Organize Code Like a Team

As your code grows, you need a way to split it into smaller reusable pieces. Modules and packages are Python’s organization tools.

What you'll learn

• importing built-in modules like math
• using from ... import ...
• writing reusable helper functions

Example

import math
from datetime import datetime
print(math.sqrt(16))
print(datetime.now())

def format_price(amount):
    return f"${amount:,.2f}"

Real-world angle

Packages make it possible to share code across scripts, build a library, or structure a web application cleanly.

Why this matters

Well-organized code is easier to debug, test, and maintain. It also makes collaboration simpler.

Next

Move on to object-oriented programming to model real systems with classes and objects.