threading的join方式使用實例代碼

import time
import threading

def foo(n):
    for i in range(n):
        print(i)
        time.sleep(1)

t_list = []

for _ in range(2):
    t = threading.Thread(target=foo, args=(10, ), daemon=True)
    t_list.append(t)
    t.start()

for i in t_list:
    i.join()

print('Main Tread Exiting')