Dictionaries
Explore how Python dictionaries store data using key-value pairs to efficiently retrieve and manage information. Learn to access values by keys, handle nested dictionaries, and use essential dictionary methods such as keys(), values(), and items() to work with data collections effectively.
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Concept
A dictionary A dictionary is an object that stores a collection of data. Each element in a dictionary has two parts: a key and a value. We use keys to locate specific values.
For many of us, the word “dictionary” elicits an image of a large book—such as the Merriam-Webster dictionary—that contains words and their definitions. If we want to know the meaning of a particular word, we locate it in the dictionary to find its definition.
In Python, a dictionary is an object that stores data collection in the form of key-value pairs. When we want to retrieve a ...