[issue41393] Fix FAQ example to use __import__('functools').reduce

[Henk-Jaap Wagenaar]

Henk-Jaap Wagenaar <wagenaarhenkjaap at gmail.com> added the comment:

It doesn't raise an error when you run the whole example, it has "from functools import reduce" at the top.

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nosy: +cryvate

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<https://bugs.python.org/issue41393>
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