Peter wrote:
> Well you could just do:
z = {a: b
for b in (transform(bi) for bi in bs)
for a in as_}
That works, but I prefer the implicit nesting of a sequence of "comp_for"
expressions to a the nested generator.
On Wed, May 30, 2018 at 2:16 PM Chris Angelico <[email protected]> wrote:
> On Thu, May 31, 2018 at 3:59 AM, Neil Girdhar <[email protected]>
> wrote:
> > This example shows additional flexibility:
> >
> > z = {a: transformed_b
> > for b in bs
> > given transformed_b = transform(b)
> > for a in as_}
> >
> > There is no nice, equivalent := version as far as I can tell.
>
> True. However, it took me several readings to understand what you were
> doing here. I think I actually prefer "for transformed_b in
> [transform(b)]" to this syntax, which is saying something.
>
I feel you. I think of "given" as an assignment that is in front of the
expression, just like "for" (in comp_for) is a for loop that is in front,
and "if" (in comp_if) is a condition that is in front.
>
> ChrisA
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