Python Nested Dictionary A dictionary can contain another dictionary, which in turn can contain dictionaries themselves, and so on to arbitrary depth. This is known as nested dictionary. Nested dictionaries are one of many ways to represent structured information (similar to ‘records’ or ‘structs’ in other languages). Create a Nested Dictionary A nested dictionary is created the same …

Python Dictionary Dictionaries are Python’s implementation of a data structure, generally known as associative arrays, hashes, or hashmaps. You can think of a dictionary as a mapping between a set of indexes (known as keys) and a set of values. Each key maps to a value. The association of a key and a value is …

Python Set Python set is an unordered collection of unique items. They are commonly used for computing mathematical operations such as union, intersection, difference, and symmetric difference. The important properties of Python sets are as follows: Sets are unordered – Items stored in a set aren’t kept in any particular order. Set items are unique – Duplicate …

Python List Comprehension A comprehension is a compact way of creating a Python data structure from iterators. With comprehensions, you can combine loops and conditional tests with a less verbose syntax. Comprehension is considered more Pythonic and often useful in a variety of scenarios. What is List Comprehension? List comprehension sounds complex but it really isn’t. List …