This article explains how Python's Abstract Base Classes provide interface‑like contracts for OOP, demonstrates their use with a payment‑gateway example, shows how to build a plugin system, and highlights the benefits of early error detection, clear conventions, and extensibility.
This article explains common Python code smells in an employee‑management example, demonstrates why practices such as using raw strings for roles, duplicated search methods, excessive isinstance checks, and vague boolean flags are problematic, and provides a step‑by‑step refactor using Enums, abstract base classes, list comprehensions, custom exceptions, and clearer method separation.
This article explains Python's object‑oriented programming fundamentals, introduces classes and instances, details how inheritance works, discusses its advantages and disadvantages—including issues with built‑in type subclassing—and offers practical guidance on multiple inheritance, method resolution order, and using super.
