sem7_4

from itertools import *
def transpose(matrix):
    return zip(*matrix)

def uniq(lists):
    return [x for x in{y for y in lists}]


def dict_merge(*x):
    return dict(chain.from_iterable(sym.items() for sym in x))

def product(vec_1, vec_2):
    product = 0
    for a, b in zip(vec_1, vec_2):
        product += a * b
    return product