List Comprehension Syntax

[Mitja]

Moosebumps <crap at crap.crap>
(news:8OXHc.13877$4y7.5713 at newssvr27.news.prodigy.com) wrote:
>> I usually do
>> result = [
>>     element.replace( 'blah', 'moof' )
>>     for element in list
>>     if element[0:4] == 'blah'
>> ]
>> It seems clean and logical enough to me - like e.g.
>> defining big dicts.
>>
>>
>
> But what if you have multiple for and if's?  Seems like
> you would want to indent them then.

Hm... I never used a complicated enough case :)
I still think I wouldn't indent them - it is clear enough how they corelate.
If anything, I'd do
foo = [
  a*b
  for a in range(10)
    for b in range(10)
      for c in ['foo','bar']
  if 42==True
]

Can you have multiple ifs at all?


> I think I might just get used to the multiline syntax
> since LCs are very useful... it just seems awkward for
> some reason.
>
> result = [ x for x in blah if f(x) ]
>
> seems more elegant than:
>
> result = [
>     x
>         for x in blah
>             if f(x) ]
>
> but I like to keep things consistent and have
> maintainability, so then the second one wins.  i.e. the
> second one "scales better" to more complicated
> expressions!
>
> MB