[Fwd: Re: [Tutor] Matrix Transpose]

[Cliff Wells]

On Fri, 2003-08-29 at 10:11, Lloyd Kvam wrote:
> I must have clicked Reply rather than reply-All.
> 
> ______________________________________________________________________
> From: Lloyd Kvam <pythontutor at venix.com>
> To: G Kiran <goki75 at vsnl.net>
> Subject: Re: [Tutor] Matrix Transpose
> Date: Fri, 29 Aug 2003 09:38:56 -0400

> 
>  >>> tb = map(None,*a)
>  >>> tb
> [(1, 1, 1), (2, 2, 2), (3, 3, 3), (None, 4, None)]
> This pads with None's.

Please forgive this one-liner:

data = """
1,2,3
1,2,3,4
4,5,6,7
"""

zip(*map(lambda *args: map(lambda a: a is not None and int(a) or 0,
args), *[row.split(',') for row in data.split('\n') if row]))

Regards,        

-- 
Cliff Wells, Software Engineer
Logiplex Corporation (www.logiplex.net)
(503) 978-6726  (800) 735-0555