Lists of lists traversal

[Cliff Crawford]

Pada 20 Dec 1999 21:17:27 GMT, Kaleissin bilang:
| 
| What I would do in your case:
| 
| listpos = 0
| while listpos < len(list_of_lists):
| 	list_of_lists[listpos] = reduce(lambda x, y: x+y, list_of_lists[listpos])
| 	listpos = listpos + 1
| 
| This destroys the original lists btw. To keep them, append the resulting 
| sum to some other list instead of replacing the list with it as above. 
| You could use a for instead of the while too, in that case.
| 
| It might not be very effective but it looks nice... list comprehension 
| version, anyone?

[reduce(lambda x, y: x+y, l) for l in list_of_lists]

:-)


-- 
cliff crawford   http://www.people.cornell.edu/pages/cjc26/
-><-             "You and your stupid orthography" -- Mark