[colug-432] Code check

[michael at yanovich.net]

You can't import itertools^Wessay, that's plagiarism.

http://i.imgur.com/NwNPU.png

On 08/01/2013 01:55 PM, Fandi Peng wrote:
> from itertools import combinations
> 
> print combinations( ['DVD', 'dishwasher', 'software', 'tv'],  2)
> 
> On Aug 1, 2013 1:39 PM, "Tom Hanlon" <tom at functionalmedia.com
> <mailto:tom at functionalmedia.com>> wrote:
> 
>     Colug,
> 
> 
>     Writing some python to do the following
> 
>     Take this list, or any similar list of variable length
> 
>     ['DVD', 'dishwasher', 'software', 'tv']
> 
>     And return all two item combinations.
> 
>     DVD *** dishwasher
>     DVD *** software
>     DVD *** tv
>     dishwasher *** software
>     dishwasher *** tv
>     software *** tv
> 
>     My first draft looks like this.
> 
>     #!/usr/bin/python
>     list1 = ['software', 'DVD', 'dishwasher', 'tv'];
>     list1.sort();
>     print list1;
>     for i in range(len(list1)):
>         for i2 in range(i+1,len(list1)):
>             print list1[i], "***",list1[i2];
> 
> 
>     It works.
> 
>     Can this be done in a cleaner way ?
>     Am I invoking any bad habits ?
>     Is there a builtin tool for this ?
> 
>     Reasons I am doing this..
>     hive the hadoop SQL to Map Reduce translator has ngrams, that allow
>     splitting strings into configurable length substrings. That is sorta
>     cool, but I want all possible pairs, not just consecutive pairs.
> 
>     The list of items is an array to hive, I could pass an array of
>     arrays if there was a complete "shuffle" I could do on the array
>     (word list) . Not finding this I figure that shipping the itemlist
>     to python would be the most efficient.
> 
>     So that is the use case, but help with the python in terms of a
>     quick sanity check is what I need. Unless you happen to be doing
>     word co-occurrence in hive and have some insight there.
> 
>     Thanks, Colug,
> 
>     Tom
> 
> 
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-- 
Michael Yanovich

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