Glossary · Phase 7 · Software engineering
Iterator
An object that gives the next item each time next() is called, and is used up when it runs out.
Try it now
Step through: the generator's body only runs when next() or list() asks for a value, and each yield pauses it with n still remembered.
Learn it properly
Iterators and generators · The iteration protocol, yield, lazy pipelines and itertools, in small memory. About 40 minutes.
Other terms from the same lesson
- generator function: A function that uses yield to hand out values one at a time, pausing between them, instead of building a whole list.
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