Iterators and generators

Objects that hand out values one at a time, only when asked - what a for loop really uses - and generators, functions with yield that pause between values, so a program can work through more data than fits in memory.

Depth 1 · Foundation

You can explain what a for loop does with iter and next, write a generator function with yield and a generator expression, say why range costs almost no memory, and know that an iterator can be gone through only once.

Depths of understanding

1
Foundation
You can explain what a for loop does with iter and next, write a generator function with yield and a generator expression, say why range costs almost no memory, and know that an iterator can be gone through only once.
Opens after
LoopsAn iterator is what a for loop asks for its next value, so you need loops first.ComprehensionsA generator expression is a comprehension in round brackets, so learn comprehensions first.

Your path here

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

Where it fits

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LoopsControl Flow Comprehensions

This concept

Iterators and generatorsData Structures

Builds onThis conceptLoopsControl Flow Comprehensions Iterators and generatorsData Structures