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What are generators and why use them?

Q: What are generators and why use them?

A **generator** is a function using `yield` to produce values lazily, one at a time, keeping state between calls. It's memory-efficient for large or infinite sequences since it doesn't build the whole list in memory, and integrates with `for` loops and iterator pipelines.

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Explain generators and yield.

generators

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A generator is a function using yield to produce values lazily, one at a time, keeping state between calls. It's memory-efficient for large or infinite sequences since it doesn't build the whole list in memory, and integrates with for loops and iterator pipelines.

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PYLazy infinite sequence, safely truncated

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