Problem in understanding Python list comprehensions

Question

What does the last line mean in the following code?

import pickle, urllib                                                                                                 


        

Answer 1

[e[1] * e[0] for e in elt] is a list comprehension, which evaluates to a list itself by looping through another list, in this case elt. Each element in the new list is e[1]*e[0], where e is the corresponding element in elt.