Lecture 3 Variables, Data Types, and Operations | Data Analytics | Python Basics | Data Science | ML

In this lecture, we take our first real step into Python programming by understanding how to store and work with data. We begin by learning what variables are and how they are used to store values in Python. Next, we explore different data types such as integers, floats, strings, booleans, and more — understanding when and how to use them. Finally, we dive into basic operations, including arithmetic, comparison, logical, and assignment operations that allow us to manipulate data and make decisions in code. This lecture forms the foundation of all programming tasks and prepares you to write real-world Python code confidently. 🧠 Topics Covered: What is a variable? Naming rules and best practices Introduction to data types (int, float, str, bool, list, dict) Type conversion (casting) Arithmetic operations (+, -, *, /, //, %, **) Comparison and logical operators Assignment operations (=, +=, *=, etc.)