What is the difference between a dictionary and a set in Python?
What is the difference between a dictionary and a set in Python?
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A dictionary is a collection of key-value pairs, where each key is unique and maps to a value. Dictionaries are defined using curly braces (
{}) and are commonly used for storing and retrieving data by key.A set is a collection of unique elements, meaning it cannot contain duplicates. Sets are defined using curly braces (
{}) or the set() function and are often used for operations like union, intersection, and difference.In full-stack development, dictionaries are used for structured data storage, while sets are used for operations involving unique elements. For example, a dictionary might store user profiles, while a set might store unique tags. Report this page