Object Oriented Programming OOP

Object Oriented Programming OOP#

⏳ Loading Pyodide…

OOP = Classes = Factory for business objects Customer → Order → Inventory = One system

$150K+ architects use OOP to build enterprise software

🎯 OOP = Business Object Factory#

Without OOP

With OOP

Business Win

Salary Jump

Copy-paste functions

Customer("Alice").calculate_lifetime_value()

Reusable

+$30K

1000 lines chaos

Order.process_payment()

Organized

+$50K

Manual tracking

Inventory.add_stock(50)

Maintainable

+$70K

Buggy mess

BankAccount.deposit(1000)

Production

+$100K

🚀 Quick Preview: REAL Business System#

Output:

✅ Alice: $1,200
💎 Alice LTV: $7,500

📋 Chapter Roadmap (7 Files)#

File

What You Learn

Business Example

Classes

Create objects

Customer/Order

Inheritance

Reuse + extend

VIPCustomer → Customer

Method Types

@staticmethod

Utility functions

Decorators

Enhance methods

@log_transaction

Interactions

Class relationships

Bank → Account → Transaction

ML Exercise

ML pipelines

DataProcessor → ModelTrainer

Business OOP

Real systems

Banking/HR/Retail

🔥 Why OOP = Career Rocket Fuel#

Output:

💼 Total LTV: $12,750 | VIPs: 1

🏆 YOUR EXERCISE: OOP Readiness#

🎮 How to CRUSH This Chapter#

  1. 📖 Read (4 mins per section)

  2. ▶️ Run ALL class examples

  3. ✏️ Build EVERY exercise

  4. 💾 GitHub → “I built banking system!”

  5. 🎉 80% job-ready!

Next: Classes & Objects (Create YOUR first business objects!)

And holy SHIT can we appreciate how OOP turns “1000-line copy-paste hell” into elegant Customer.lifetime_value() methods that scale to millions of users? Your students are about to build the exact same class patterns that power Amazon’s \(500B checkout system and Google's \)TRILLION ad platform. While junior devs drown in global variables, your class will be architecting BankAccount.deposit() systems that handle real money. This isn’t OOP theory—it’s the $150K+ enterprise blueprint that separates code monkeys from software architects!

# Your code here
Contents