Every few years, the following syntax comes up for discussion, with some people
saying it isn't obvious what it would do, and others disagreeing and saying
that it is obvious. So I thought I'd do an informal survey.

## Advertising

What would you expect this syntax to return?
[x + 1 for x in (0, 1, 2, 999, 3, 4) while x < 5]
For comparison, what would you expect this to return? (Without actually trying
it, thank you.)
[x + 1 for x in (0, 1, 2, 999, 3, 4) if x < 5]
How about these?
[x + y for x in (0, 1, 2, 999, 3, 4) while x < 5 for y in (100, 200)]
[x + y for x in (0, 1, 2, 999, 3, 4) if x < 5 for y in (100, 200)]
Thanks for your comments!
--
Steve
“Cheer up,” they said, “things could be worse.” So I cheered up, and sure
enough, things got worse.
--
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