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MODULE 13 · ADVANCED

Design Patterns in PythonPython · Module 13

Use creational and structural patterns as a shared vocabulary, while letting Python's functions, protocols, and modules replace unnecessary ceremony.

3 lessons12 min readingConnect, test, and ship1 project
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WHAT THIS MODULE COVERS

Design Patterns in Python

Use creational and structural patterns as a shared vocabulary, while letting Python's functions, protocols, and modules replace unnecessary ceremony.

BEFORE YOU START

Classes, inheritance, and solid understanding of OOP.

WHAT YOU’LL BE ABLE TO DO

Apply creational (Singleton, Factory, Builder) and structural (Adapter, Decorator, Proxy) design patterns to write maintainable, scalable Python code.

THE LESSON SEQUENCE

Read in order, or jump to what you need.

Every lesson builds on the one before it. Open any lesson to read the explanation, run the examples, and try the practice challenges.

  1. 13.01
    Creational Patterns

    Control object creation with factories, builders, and module-level singletons without hiding dependencies.

    4 min
  2. 13.02
    Structural Patterns

    Adapt incompatible interfaces, add behavior with decorators, and control access with a proxy without hiding the real object.

    4 min
  3. 13.03
    Project: A Plugin System with PatternsProject

    Build a registry of export strategies, protect the contract with a Protocol, and add new formats without editing the calling code.

    4 min
MODULE SELF-CHECK

Ready to move on?

Refactor existing code to use appropriate design patterns and explain how the pattern improves maintainability and flexibility.

Open the module self-check