Object-Oriented Programming (OOP) concepts in Python refer to a programming paradigm that structures code using objects, which are instances of classes. The core principles of OOP are encapsulation, inheritance, polymorphism, and abstraction. Encapsulation means bundling data (attributes) and methods (functions) together into a single unit, protecting the data from unauthorized access. Inheritance allows a class to inherit attributes and methods from another class, promoting code reuse. Polymorphism enables the use of a single interface for different data types, making code more flexible. Abstraction hides implementation details, exposing only the essential features. Python’s simple syntax makes OOP easy to implement and understand.