array from list of lists

Robert Kern robert.kern at gmail.com
Sun Nov 12 22:27:54 CST 2006


Pierre GM wrote:
> On Sunday 12 November 2006 20:10, Erin Sheldon wrote:
>> Actually, there is a problem with that approach.  It first converts
>> the entire array to a single type, by default a floating type.  
> 
> As A.M. Archibald suggested, you can use list comprehension:
> N.array([(a,b,c,d,) for (a,b,c,d) in yourlist], dtype=yourdesc)
> 
> or
> 
> N.fromiter(((a,b,c,d) for (a,b,c,d,) in yourlist), dtype=yourdesc)
> 
> Would you mind trying that, and let us know which one works best ? That could 
> be put on the wiki somewhere...

N.array(map(tuple, yourlist), dtype=yourdesc)

is probably the best option.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
 that is made terrible by our own mad attempt to interpret it as though it had
 an underlying truth."
  -- Umberto Eco


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