array from list of lists

Tim Hochberg tim.hochberg at ieee.org
Mon Nov 13 11:45:55 CST 2006


Tim Hochberg wrote:
> [SNIP]
>>   
>>     
>
> Just for completeness, I benchmarked the fromiter and map(tuple, 
> results)  solutions as well. Map is fastest, followed by fromiter, list 
> comprehension and then fromrecords. The differences are pretty minor 
> however, so I'd stick with whatever seems clearest.
>
> -tim
>
>   
Here's one more approach that's marginally faster than the map based 
solution and also won't chew up an extra memory since it's based on from 
iter:

numpy.fromiter(itertools.imap(tuple, results), dtype=mydescriptor, 
count=len(results))


[SNIP]

-tim


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