What is the meaning of a set in Python?

In Python, a set is a data structure used to store an unordered collection of unique elements. It is represented by a pair of curly braces {}, with elements separated by commas. Elements in a set have no fixed order and are unique, meaning it can be used to eliminate duplicate elements.

The main features of Set include:

1. Duplicates are not allowed: The elements in a Set are unique, and if an attempt is made to add a duplicate element, only one copy will be retained.
2. The elements in a set do not have a specific order and cannot be accessed by index.
3. Mutability: Sets are mutable, allowing for the addition, removal, and updating of elements.
4. Support basic set operations, such as union, intersection, difference, and symmetric difference.

Set is commonly used in Python to remove duplicate elements from a list, determine if two sets have any intersection, and perform mathematical operations on sets.