extra a column from a 2-D array?

[Robert Kern]

Joe Wong wrote:
> Hello,
>  
>  Suppose I have a python array as follow:
>  
>     s=[ [1,3,5],
>           [2,4,6],
>           [9,8,7]]
>  
> what is the quickest way to extract the second colum from all rows? That 
> is: [3,4,8] in this example.

Use Numeric. http://numeric.scipy.org

from Numeric import *
s = array([[1,3,5], [2,4,6], [9,8,7]])
print s[:,1]

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
 Are the graves of dreams allowed to die."
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