Python OOP Project: Build a Banking System (Inheritance & Methods) | Python Tutorial #30

Let's build a Bank! In this tutorial, we bring everything we've learned about Object-Oriented Programming (OOP) together to build a functional banking system from scratch.

You’ll see Inheritance in action as we create a Parent 'Account' class and two Child classes: 'Current' and 'Savings'. We’ll implement deposit and withdrawal logic, handle overdraft limits, and use the _str_ dunder method to print beautiful account statements. This is the perfect project to make all those complex OOP concepts finally "click."

📌 Timestamps:
0:00:00 Introduction: Why a Banking System is the perfect OOP project
0:01:15 Building the 'Account' Parent Class (Template)
0:02:10 Coding the Deposit Method (+ = shortcut)
0:03:00 Coding the Withdraw Method with safety checks
0:04:40 Inheritance: Creating the 'Current' Account with an Overdraft
0:05:30 Using the super() function to pass data to Parent
0:07:35 Testing the Current Account: Going into the negative!
0:08:45 Customizing Output with the _str_ method
0:09:40 Creating the 'Savings' Account (No Overdraft allowed)
0:10:50 Comparing Current vs. Savings behavior
0:12:15 FULL OOP RECAP: Abstraction, Encapsulation, Inheritance & Polymorphism
0:17:15 Final Message: Celebrating your progress in the Python Bible!

This is the final project in the core Python 2026 series. If you've followed along from Episode 1, you now have the skills to build complex, real-world applications!

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