[issue13804] Python library structure creates hard to read code when using higher order functions

[Daniel Stutzbach]

Daniel Stutzbach <stutzbach at google.com> added the comment:

If I'm understanding Martin Häcker's code correctly, the list comprehension equivalent is:

self.questions = [topic.questions for topic in self.topics]

The reduce() variants are not only much harder to read, but they will take O(n**2) operations because they create an O(n) list O(n) times.

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nosy: +stutzbach

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