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# Infinite sequences

Some sequences are infinite, prime numbers, Fibonacci numbers, odd numbers, and so on. Infinite sequences aren't limited to sets of numbers; more abstract notions can be considered infinite. For example, a set of stings that repeats itself infinitely, a Boolean value that toggles infinitely, and so on. In this section, we'll explore how generators make it possible for us to work with infinite sequences.

## No end in sight

Allocating items from an infinite sequence isn't practical from a memory consumption point of view. In fact, it's not even possible to allocate the whole sequence—it's infinite. Memory is finite. So, it's better to simply sidestep the whole allocation problem entirely and use a generator to yield the values from ...

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