Thanks  a lot for your reply! 
I've reservations,  maybe code looks like: 
"""
colwidth = max(map(len, list))
ncols = displaywidth/(colwidth+2)+1
nrows = size/ncols+1
for nrows
     for ncols
          texts = list[...]
          output texts
"""
is clear, and just waste some space of stdout.

---
Best Regards
tom


发件人: Guido van Rossum <guido@python.org>
收件人: Tom Zhou <pytom@yahoo.cn>
抄送: "python-ideas@python.org" <python-ideas@python.org>
发送日期: 2011年12月20日, 星期二, 上午 7:14
主题: Re: [Python-ideas] Columnize in module "cmd"

That code is trying to find an optimal solution where the columns may be of different width.

Good luck!

--Guido

On Mon, Dec 19, 2011 at 8:07 PM, Tom Zhou <pytom@yahoo.cn> wrote:

Hi~ alls
recently, i focus on the module "cmd", and find some confused things-- the function named "columnize". Why we need a multiloop as
"for nrows ..
        for col ..
                   for row.."
?? i think we can make a easier method, for example, first, find out the maxlen str in list, and use its length as the standard size to format the list.
Ok, maybe i ignore something, so please give me some hints.


---
thanks
tom



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--
--Guido van Rossum (python.org/~guido)