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Dictionaries in Python are like a supercharged version of a real-world dictionary — they allow you to store and retrieve data in a way that’s both efficient and intuitive. Whether you’re a beginner or an experienced programmer, mastering dictionaries is a must for taking your Python skills to the next level.
In this article, we’ll dive deep into the world of Python dictionaries, exploring their structure, syntax, and a wide range of practical examples that will help you understand how to use them effectively in your code.
What are Python Dictionaries?
A dictionary in Python is an unordered collection of key-value pairs. Each key in the dictionary must be unique, and it’s used to retrieve the corresponding value. Dictionaries are mutable, which means you can add, modify, or remove elements after they’ve been created.
Here’s a simple example of how to create a dictionary in Python:
person = {'name': 'Alice', 'age': 28, 'city': 'New York'}
In this example, we’ve created a dictionary called person
with three key-value pairs. The keys are 'name'
, 'age'
, and 'city'
…