Dictionaries

A collection of key-value pairs that finds a value by its key in one step, like a phone book in code.

Depth 1 · Foundation

You can store values under keys, look them up safely, count things with a dictionary and loop over its pairs, and you know why keys are unique and can't be values that change.

Depths of understanding

1
Foundation
You can store values under keys, look them up safely, count things with a dictionary and loop over its pairs, and you know why keys are unique and can't be values that change.
Opens after
ListsA dictionary is the answer to keeping two lists in step and searching them one item at a time, so you need to know lists first.

Your path here

What's still between you and Dictionaries, depth 1, in the order you can learn it.

Where it fits

Builds on

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This concept

DictionariesData Structures

Opens up

Classes and objectsObjects and Classes Sets in code Type annotationsWriting Correct Code

Builds onThis conceptOpens upLists DictionariesData Structures Classes and objectsObjects and Classes Sets in code Type annotationsWriting Correct Code