import time
import random
import threading
def hello(name):
print("ThreadName: %s" % threading.current_thread().name)
time.sleep(random.random() * 5)
print("Hello, World: %s" %name)
if __name__ == "__main__":
t1 = threading.Thread(target=hello, args=('zhangsan',))
t2 = threading.Thread(target=hello, args=('lisi',))
t1.start()
t2.start()
t1.join()
t2.join()