#iterators

Python Hard Theory

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Iterable vs iterator, custom iterators, generators, and `send`/`throw`/`close`

An iterable can produce an iterator, an iterator yields values one at a time, generators are a compact way to build iterators, and advanced generator methods can push values or exceptions back in.

• Iterables and iterators are not the same
• Generators implement the iterator protocol for you
• `send`, `throw`, and `close` control generator execution

#generators #iterators #python

Iterable vs iterator, custom iterators, generators, and `send`/`throw`/`close`

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Python Easy Theory

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What is a generator?

A generator yields values lazily so you can stream work instead of building the whole collection at once.

• Uses yield
• Keeps state between iterations
• Good for large data

#iterators #memory #python

What is a generator?

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