Comparing two lists and only printing the differences? (XORing two lists)

Question

I\'m trying to create a function that takes in 2 lists and returns the list that only has the differences of the two lists.

Example:

a = [1,2,5,7,9]         


        

Answer 1

Try this,

    a = [1,2,5,7,9]
    b = [1,2,4,8,9]
 print set(a).symmetric_difference(set(b))