Enroll Course: https://www.udemy.com/course/python-3-deep-dive-part-3/

Python’s dictionaries and sets are fundamental data structures, powering everything from simple data storage to complex object representations. If you’re looking to truly understand these powerful tools, the ‘Python 3: Deep Dive (Part 3 – Dictionaries, Sets, JSON)’ course on Udemy is an absolute must-watch.

This course lives up to its ‘deep dive’ promise, exploring dictionaries and sets with a level of detail that goes far beyond the basics. It meticulously breaks down how dictionaries function internally, touching upon hash maps and hash functions, and even guiding you on how to create your own custom dictionary implementations by inheriting from `UserDict`. For those who need ordered dictionaries, the course covers `OrderedDict` and its relationship with the modern Python 3.6+ `dict`. It also introduces specialized structures like `Counter` for multi-sets and `ChainMap` for managing multiple dictionaries.

A significant portion of the course is dedicated to the practical application of dictionaries, particularly their serialization and deserialization to JSON. This is a crucial skill for anyone working with web APIs or data exchange. The course doesn’t stop there; it delves into using schemas for custom JSON deserialization and provides a valuable introduction to libraries like `JSONSchema`, `PyYaml`, and `Serpy`.

It’s important to preface this review by stating that this course is indeed for intermediate to advanced Python developers. The prerequisites are clearly laid out, and they are not to be taken lightly. A solid grasp of functions, functional programming concepts (like recursion, `*args`, `**kwargs`, `zip`, `map`, `sorted`), lambdas, closures, decorators, iterables, generators, context managers, named tuples, and variable scopes is essential. If you’re not comfortable with these foundational concepts, you might find the pace challenging.

However, if you meet the prerequisites, this course is incredibly rewarding. The instructor’s explanations are clear and concise, and the use of Jupyter Notebooks makes the practical examples easy to follow and experiment with. You’ll come away with a profound understanding of how dictionaries and sets work under the hood, and how to leverage them effectively in your projects.

**Recommendation:** If you’re aiming to elevate your Python skills and gain a comprehensive understanding of dictionaries, sets, and JSON handling, this course is highly recommended. It’s an investment in your development that will pay dividends in your ability to write more efficient and sophisticated Python code.

Enroll Course: https://www.udemy.com/course/python-3-deep-dive-part-3/