List to dict conversion

Alex Martelli aleax at aleax.it
Fri Oct 3 11:47:15 CEST 2003


Wujek wrote:

> Hi!
> 
>  From list:
>  >>> l
> ['key1:val1', 'key2:val2']
> 
> I want dict:
>  >>> d
> {'key2': 'val2', 'key1': 'val1'}
> 
> Is there any better (faster, simplier, prettier?) solution than this?
>  >>> for line in l:
> ...   spl=line.split(':')
> ...   d[spl[0]] = spl[1]

d = dict([ x.split(':') for x in l ])

should work just the same way as your loop -- perhaps marginally
faster (try both with timeit.py, of course, if it DOES matter...!),
and "simpler" and "prettier" are in the eyes of the beholders.


Alex





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