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Python Encapsulation – Protecting Data Inside a Class (Explained Simply) 📅 Published on Code with Py 📂 Category: Python OOP ⏱️ Reading time: ~14 min You have built classes , used inheritance , and written polymorphic code. Now imagine this — you built a BankAccount class. Someone from outside the class directly writes account.balance = 9999999 and suddenly their account has unlimited money. No checks, no validation, nothing stopping them. That is a dangerous design. Encapsulation is the OOP principle that prevents exactly this — it wraps your data safely inside the class and controls who can read or change it. Think of it as putting your data in a safe locker and deciding who gets the key. 📋 Table of Contents What Is Encapsulation and Why Should You Care? Real-Life Analogy — The Hospital Patient Record Access Modifiers in Python Public Attributes — Open to Everyone Protected Attributes — Handle With Care Private Attributes — Locked Away Step-by-Step Trace — What Happens When You ...

Circle π × r² Rectangle l × w Triangle ½ × b × h Square s × s PYTHON OOP Python Polymorphism method overriding · duck typing · operator overloading codewithpypy.blogspot.com Python Polymorphism – One Name, Many Forms Explained for Beginners 📅 Published on Code with Py 📂 Category: Python OOP ⏱️ Reading time: ~14 min You already know how to build classes and use inheritance to share code between them. Now here is a question — what if ten different classes all need a method called area() ? Every shape calculates area differently, but you want to call area() the same way on all of them without caring which shape it is. That is exactly what Polymorphism solves. The word comes from Greek — poly means many, morph means form. Same method name, different behaviour depending on which object uses it. This guide breaks it down completely with clear examples and real-life reasoning. 📋 Table of Contents What Exactly Is Polymorphism? Real-Life Analogy — The Same Switch, Different Lights Poly...