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Can I search a list for a range of values?

Ian Kelly ian.g.kelly at gmail.com
Fri Oct 14 19:01:04 EDT 2011 
On Fri, Oct 14, 2011 at 4:30 PM, Tim Chase
<python.list at tim.thechases.com> wrote:
> On 10/14/11 17:20, Chris Angelico wrote:
>>
>> Try a list comprehension:
>>
>>>>> a = [2,4,5,6,3,9,10,34,39,59,20,15,13,14]
>>>>> [i for i in a if i>=10 if i<=20]
>>
>> [10, 20, 15, 13, 14]
>
> The double-if is new to me.  I thought it was an error when I first saw it,
> but it seems to be legit syntax (or at least one that 2.7 tolerates,
> intentionally or otherwise...).  I think I'd make it clearer with either
>
>  [i for i in a if i>=10 and i<=20]
>
> or even more clearly:
>
>  [i for i in a if 10 <= i <= 20]

As long as we're nitpicking, I'll point out that "i" is an
inappropriate variable name here, since it is normally used to denote
indices, not data.  That's why I used "x" in my response instead. ;-)

Cheers,
Ian
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