Your Python Class Is a God Object (Here’s How to Fix It)

ArjanCodes · Beginner ·🛠️ AI Tools & Apps ·2mo ago

Key Takeaways

Refactors a Python class to avoid God object anti-pattern by breaking it into smaller classes with single responsibilities

Original Description

🧱 Build software that lasts. Join the Software Design Mastery waiting list → https://arjan.codes/mastery. This class looks clean… until it quietly turns into a God object. In this video, I refactor a real Python example step by step, showing how one class slowly takes on too many responsibilities. From validation to data processing to model training. Then I break it apart into smaller, clearer pieces and introduce a simple rule of thumb for deciding what belongs in a class and what doesn’t. 🔥 GitHub Repository: https://git.arjan.codes/2026/god. 🎓 ArjanCodes Courses: https://www.arjancodes.com/courses. 💬 Join my Discord server: https://discord.arjan.codes. ⌨️ Keyboard I’m using: https://amzn.to/49YM97v. 🔖 Chapters: 0:00 Intro 1:54 The Starting Point 4:10 Step 1: Move Validation Close to the Data 6:54 Step 2: Split Loading and Cleaning 8:02 Step 3: Split Feature Preparation Into Smaller Steps 9:06 Step 4: Move the Remaining Workflow Out of the Class 11:28 Step 5: Keep the Class for What It’s Good At 12:13 Why This Refactor Works 14:37 Final Thoughts #arjancodes #softwaredesign #python

Watch on YouTube ↗ (saves to browser)

Sign in to unlock AI tutor explanation · ⚡30

Related Reads

Runway Can’t Win on ‘Best Model’ Anymore. So It Stopped Trying To.

Runway launches Media Router, a tool that automatically selects the best image, shifting focus from 'best model' to practical solutions

Ferramentas de IA gratuitas para opções em Portugal (2026)

Learn about free AI tools for trading options in Portugal in 2026 and how to apply them for better investment decisions

Free AI APIs you can use right now without a credit card

Explore free AI APIs that don't require a credit card, and start building with them today

Dev.to · David García

Automated Property Tax Appeal Letters for Homeowners: Earn $500–$2,000/Month with Manus AI

Learn how to automate property tax appeal letters for homeowners using Manus AI and earn $500-$2,000/month

Chapters (9)

Intro

1:54 The Starting Point

4:10 Step 1: Move Validation Close to the Data

6:54 Step 2: Split Loading and Cleaning

8:02 Step 3: Split Feature Preparation Into Smaller Steps

9:06 Step 4: Move the Remaining Workflow Out of the Class

11:28 Step 5: Keep the Class for What It’s Good At

12:13 Why This Refactor Works

14:37 Final Thoughts

AI Overviews & SEO Rankings: What Google Says About it All (Google Business Summit Recap)

Mariah Magazine