vectormath | Modified version of Sony 's open sourced vector

Replace

vector_A = map(int,vector_A) with vector_A = list(map(int, vector_A))

and

vector_B = map(int,vector_B) with vector_B = list(map(int, vector_B))

Here map(int, vector_A) returns a map object which is an iterator.

list() takes the iterator and returns a list which you require in your code for further vector calculation.

As of now, you are passing map object to functions addition, Dotproduct and norm, which actually should be a list for the calculations defined.

Above changes converts the map object to list.