On 08/10/2017 04:28 PM, Steve D'Aprano wrote:
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.
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!
[1,2,3]
[1,2,3,4,5]
SyntaxError("Have you tried Perl ?")
SyntaxError("Have you tried Perl ?")
I really would not want to deal with 3 and 4.
jm
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