Best pattern/idiom

Chris Connett chrisccc_3k at yahoo.com
Mon Aug 9 20:35:01 CEST 2004


I was wondering if there were a well known pattern/idiom for breaking a 
sequence into a list of lists, each n elements long, e.g.

[0,1,2,3,4,5,6,7,8,9,10,11] -> [[0,1,2,3],[4,5,6,7],[8,9,10,11]]

This comes up reasonably often in my work, and every time I re-think 
about it, and come up with
[ lis[n:n+4] for n in range( 0, len( lis ), 4 ) ]
which seems very kludgy to me, since it uses a range and len, 2 mentions 
of the list identifier and 2 literal 4's (which is the size I want to 
break into this time).

Is there a better way?




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