[Tutor] Dictionary Comprehensions

Christian Witts cwitts at compuscan.co.za
Mon Dec 7 07:02:28 CET 2009


Khalid Al-Ghamdi wrote:
> Hi everyone!
>
> I'm using python 3.1 and I want to to know why is it when I enter the 
> following in a dictionary comprehension:
>
> >>> dc={y:x for y in list("khalid") for x in range(6)}
>
> I get the following:
> {'a': 5, 'd': 5, 'i': 5, 'h': 5, 'k': 5, 'l': 5}
>
> instead of the expected:
> {'a': 0, 'd': 1, 'i': 2, 'h': 3, 'k': 4, 'l': 5}
>
> and is there a way to get the target (expected) dictionary using a 
> dictionary comprehension. 
>
> note that I tried sorted(range(6)) also but to no avail.
>
> thanks 
>
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Are you maybe looking for `dc = {y:x for y,x in zip('khalid', range(6))}` ?

-- 
Kind Regards,
Christian Witts




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