How to iterate through a list of lists in python?

Question

I have a list of lists like this.

documents = [[\'Human machine interface for lab abc computer applications\',\'4\'],
             [\'A survey of user opinio         


        

Answer 1

As explained in http://docs.python.org/library/operator.html#operator.itemgetter, You can also try with

from operator import itemgetter
documents = map(itemgetter(0), documents)

that should be faster than using an explicit loop.