On Sun, Aug 23, 2020 at 09:43:14PM -0700, Christopher Barker wrote:

> Why not allow slice syntax as an expression everywhere? Everywhere I’ve
> tried, it’s a syntax error now, but is there any technical reason that it
> couldn’t be used pretty much anywhere?

When do you use slices outside of a subscript?

More importantly, when do you need slices outside of a subscript where 
they would benefit from being written in compact slice syntax rather 
than function call syntax?

I think I've done something like this once or twice:


    chunk = slice(a, b, step)
    for seq in sequences:
        do_something_with(seq[chunk])


but I don't even remember why :-)

I'm not convinced that the first line would be better written as:

    chunk = a:b:step

But this definitely wouldn't be:

    chunk = ::

So apart from "but it looks cool" why do you want this?

(I agree that slices look cool inside subscripts, I'm just not so sure 
about outside of them.)


-- 
Steve
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