Comprehensions

A one-line way to build a list, dictionary or set from a loop - what you want, where it comes from and which ones - instead of an empty list, a loop and append.

Depth 1 · Foundation

You can write list, dictionary and set comprehensions with and without an if, read one aloud in order, turn a building loop into one and back, and know when a plain loop is clearer.

Depths of understanding

1
Foundation
You can write list, dictionary and set comprehensions with and without an if, read one aloud in order, turn a building loop into one and back, and know when a plain loop is clearer.
Opens after
ListsA list comprehension builds a list, so you need to know lists and the loops that fill them first.First-class functionsComprehensions do the jobs of map and filter in one readable line, so it helps to have met those first.

Your path here

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

Where it fits

Builds on

Lists First-class functionsFunctions

This concept

ComprehensionsData Structures

Opens up

Iterators and generators

Builds onThis conceptOpens upLists First-class functionsFunctions ComprehensionsData Structures Iterators and generators