from __future__ import print_function
import threading

def printer(num):
    for i in range(100):
        print(num)

def main():
    threads = []
    for i in range(10):
        t = threading.Thread(target=printer, args=(i,))
        threads.append(t)
    for t in threads:
        t.start()
    for t in threads:
        t.join()

if __name__ == '__main__':
    main()