Write a Python function that returns the sum of the pairwise
     Write a Python function that returns the sum of the pairwise products of listA and listB. You should assume that listA and listB have the same length and are two lists of integer numbers. For example, if listA = [1, 2, 3] and listB = [4, 5, 6], the dot product is 1 astir 4 + 2 astir 5 + 3 astir 6, meaning your function should return 32   
  
  Solution
// dotproduct function uses sum and zip function, zip function is used to Make an iterator that aggregates elements from each of the list. and sum function add element of list parallel .
def dotproduct(ListA,ListB):
 return sum(i*j for i, j in zip(ListA,ListB))
 
 print dotproduct([1,2,3],[4,5,6])

