On Fri, 27 Apr 2012 19:57:31 +1000
Chris Angelico <ros...@gmail.com> wrote:
> On Fri, Apr 27, 2012 at 7:49 PM, Miles Rout <miles.r...@gmail.com> wrote:
> > We have if inside list comprehensions? I didn't know that, could you provide
> > an example?
>
> You mean like:
>
> [x*2+1 for x in range(10) if x%3]
>
Speaking of list comprehensions, if clauses and half-baked ideas, sometimes I'd
like to be able to do something like:
results = [x = expensive_call(i) for i in iterable if condition(x)]
(or maybe "expensive_call(i) as x..." or whatever), instead of:
results = []
for i in iterable:
x = expensive_call(i)
if condition(x):
results.append(x)
--
John
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