lab1.py

#!/usr/bin/env python3

import sys
import random
import threading
from time import perf_counter


def gen_lists(n):
    v1 = [i + random.randint(1, 9) for i in range(n)]
    print("First list generated")
    v2 = [i + random.randint(1, 9) for i in range(n)]
    print("Second list generated")
    return v1, v2

def sum_list(arr):
    start = perf_counter()
    list_sum = sum(arr)
    print("Sum of array's numbers is {}, it took {} seconds to count".format(list_sum, round(perf_counter() - start, 6)))


def main():
    n = int(input("Enter length of array:\n"))
    lists = gen_lists(n)
    print("Counting in separate threads")
    t1 = threading.Thread(target=sum_list, args=(lists[0],))
    t2 = threading.Thread(target=sum_list, args=(lists[1],))
    t1.start()
    t2.start()
    t1.join()
    t2.join()
    print("Counting in main thread")
    sum_list(lists[0])
    sum_list(lists[1])

if __name__ == "__main__":
    main()