How to slice a list of lists

Question

I have an input stream as follows:

data = [[1,234],[2,432],[3,443]]

How can I get the second element of every list? I can get the second value of a single entry by data[0][1], or every list in a range with both elements using data[0:2], but how to get just the second element from every list? Just looping through the list seems inefficient.

Answer 1

Use a list comprehension:

[lst[1] for lst in data]

Answer 2

Use operator and map:

from operator import itemgetter
map(itemgetter(1), data)