Paul Berkowitz wrote:

> That gets me the 'difference' items. I'd also like to get the line  
> numbers
> of those items in the l2 text.

See <http://docs.python.org/lib/module-sets.html>.

from sets import Set

list1 = [1,2,3,4,5,6]
list2 = [2,4,7]

set1 = Set(list1)
set2 = Set(list2)

unique_to_list1= list(set1 - set2)
print unique_to_list1

common_to_both = list(set1 & set2)
print common_to_both

unique_to_list1_indexes = [list1.index(val) + 1 for val in  
unique_to_list1]
print unique_to_list1_indexes

common_to_both_indexes_for_list2= [list2.index(val) + 1 for val in  
common_to_both]
print common_to_both_indexes_for_list2


Bear in mind that if a source list contains multiple identical  
values, only the first one will be considered. Also, remember that  
case is considered when comparing text, so if you need to do case- 
insensitive comparisons you'll need to normalise all the text  
beforehand.

If passing information via the shell, remember to deal with text  
encoding issues appropriately. If passing input data directly via 'do  
shell script' rather than by file don't forget that there's a limit  
on how much you can pass that way. If using TIDs to split return- 
delimited Unicode text into lists and vice-versa, bear in mind that  
this has at least one known bug where many non-ASCII characters will  
cause list-to-unicode-text coercions to fail silently.

HTH

has
-- 
http://freespace.virgin.net/hamish.sanderson/
http://appscript.sourceforge.net
http://rb-appscript.rubyforge.org




-- 
http://freespace.virgin.net/hamish.sanderson/
http://appscript.sourceforge.net
http://rb-appscript.rubyforge.org