Скачать или смотреть Day-12/90(P-1/2) | Dictionary in Python | AI, DS and ML Full course for beginners(Tamil) |Hire Ready

Day 12, Part 1 of your Complete Artificial Intelligence (AI) Course in Tamil introduces one of the most powerful data structures in Python: the dictionary. In this concept-focused session, you will learn what a dictionary is, why it is used to store information as key–value pairs, and how it becomes the backbone for many AI, ML, and Data Science applications.

You’ll understand how Python dictionaries allow you to map a key (like a name or ID) to a value (like age, score, or settings), making your data more structured and meaningful than simple lists. Explained fully in Tamil, you will see how dictionaries are unordered, mutable, and optimized for fast lookups, which makes them ideal for configuration data, model parameters, feature mappings, and JSON-style API responses in AI projects.

The lesson covers how to create dictionaries using {} and dict(), what makes dictionary keys unique, and why keys must be immutable types like strings, numbers, or tuples. We also discuss real-world AI scenarios such as storing student marks, model hyperparameters, label encodings, and user profile data in dictionary form.

By the end of Part 1, you will have a clear conceptual understanding of dictionaries and where they fit compared to lists, tuples, and sets. This knowledge prepares you to move into hands-on dictionary methods and operations in Part 2.