Core Advanced Python Introduction In this section, we will go beyond the basics and explore the advanced building blocks of Python . As a JavaScript developer, you already know concepts like arrays, objects, functions, and modules. Here, the focus is not on teaching you programming from scratch, but on showing you how these concepts appear in Python — with new syntax, some unique rules, and Python-specific features. The main goal of this section is to help you write type-safe, maintainable, and modular Python applications . Each topic will be explained with practical examples, side-by-side comparisons when useful, and short explanations on why Python does it differently than JavaScript . By the end of this section, you’ll be able to: Use type hints to make your Python code safer (similar to TypeScript). Work with different data types like tuples and sets, which have no direct equivalent in JavaScript. Handle strings with advanced operations such as slicing, formatting, and regex. Write more powerful functions with keyword arguments, default values, lambdas, and decorators. Improve error handling with custom exceptions . Organize your code into modules and classes to keep it clean and scalable. Persist your data using file handling techniques (text, JSON, CSV). 📌 Anchor project : Throughout this section, we will use an Inventory Management System (IMS) as our real-world example. This system will allow us to combine all advanced features into a practical app that manages products, stock levels, and prices — while showing you how to structure your Python code like a pro.