Barriers for synchronization mechanism

barriers.py

from random import randrange
from threading import Barrier, Thread
from time import ctime, sleep

num = 5
# 5 threads will need to pass this barrier to get released.
b = Barrier(num)
names = ["Brijesh", "Shubham", "Anup", "Kamesh"]

def player():
    name = names.pop()
    sleep(randrange(2, 6))
    print("%s reached the barrier at: %s" % (name, ctime()))
    b.wait()
    
threads = []
print("Race conditions starts now")

for i in range(num):
    threads.append(Thread(target=player))
    threads[-1].start()
"""
Following loop enables waiting for the threads to complete before moving on main.
"""
for thread in threads:
    thread.join()
print()
print("Race over!")