Proposed new syntax

[jmp]

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