Sort a list numerically in Python

Question

So I have this list, we\'ll call it listA. I\'m trying to get the [3] item in each list e.g. [\'5.01\',\'5.88\',\'2.10\',\'9.45\',\'17.58\',\'2.76\'] in sorted orde

Answer 1

from operator import itemgetter
lstA.sort(reverse = True, key = itemgetter(3))

And you are good to go. Using itemgetter() within a sort is extremely helpful when you have multiple indexs to sort on. Lets say you wanted to sort alphabetically on the first value in case of a tie you could do the following

from operator import itemgetter
lstA.sort(key = itemgetter(0))
lstA.sort(reverse = True, key = itemgetter(3))

And Voilà!