Lists

An ordered collection of values under one name, reached by position and able to grow, shrink and change - how a program keeps many values of the same kind.

Depth 1 · Foundation

You can build a list, read and change items by index from 0, loop over it, add and remove items, split text into a list and join it back, and you know the difference between changing a list in place and making a new one.

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Depths of understanding

1
Foundation
You can build a list, read and change items by index from 0, loop over it, add and remove items, split text into a list and join it back, and you know the difference between changing a list in place and making a new one.
Opens after
StringsA list is indexed and sliced exactly like a string, and lists are often made by splitting a string, so strings come first.LoopsA list is worth having because a loop can go through it, so you need loops first.

Your path here

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

Where it fits

Builds on

StringsData Types LoopsControl Flow

This concept

ListsData Structures

Opens up

Comprehensions Dictionaries First-class functionsFunctions Immutability Nested data

Builds onThis conceptOpens upStringsData Types LoopsControl Flow ListsData Structures Comprehensions Dictionaries First-class functionsFunctions Immutability Nested data

Makes these deeper

Once you know Lists, come back to these — they'll mean more.

Variables in codeDepth 2Two names sharing one value only shows once a value can change, and a list is the first value that can.