python - How to remove duplicate values from a beautiful soup result set whilst preserving order? -

i have scenario searching through values in beautiful soup result set , treating them differently depending on contents, eg:

for in bs_result_set:     if 'this unique string' in i.text:         print 'aaaa'     else:         print 'bbbb' 

however have realised unique condition occurs twice in result set not need second replicate value , therefore want remove result set in first place.

i have tried approaches removing duplicate values in list (whilst preserving order) these not seem work on object beautiful soup result set. eg used logic this post try:

from collections import ordereddict  ordereddict.fromkeys(bs_result_set).keys() 

but didn't seem remove duplicate values.

so question how remove duplicate values beautiful soup result set whilst preserving order?

what about:

h = {} in bs_result_set:     if not in h:         if 'this unique string' in i.text:             print 'aaaa'         else:             print 'bbbb'         h[i] = 1 

if key not i found i (computed, field, etc.), can do

h = {} in bs_result_set:     key = <some formula involving i>     if key not in h:         if 'this unique string' in i.text:             print 'aaaa'         else:             print 'bbbb'         h[key] = 1