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Python language

Iterator protocol

__iter__ returning an iterator and __next__ returning the next value or raising StopIteration.

Distinguish iterable from iterator. A list is iterable and gives a fresh iterator each time; a generator is its own iterator and exhausts once.

A function using yield, producing values lazily and holding its state between calls.

This term is part of the free Python Full-Stack interview preparation module - browse the full glossary for every definition.

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