import threading
import time
 
 
class myThread(threading.Thread):
    def __init__(self, threadID, name):
        threading.Thread.__init__(self)
        self.threadID = threadID
        self.name = name
 
    def run(self):
        print_time(self.threadID, self.name)
 
num = 0
def print_time(threadID, name):
    global num
    # 每一个线程循环10次，最终总循环次数为30次
    for i in range(10):
        print("start run")
        time.sleep(2)
        print(i)
        num += 1
    print("thread_id=%s:name=%s" % (threadID, name))
 
 
if __name__ == '__main__':
    threads = []
    # 新增三个线程
    for i in range(3):
        name = "Thread-%d" % i
        t = myThread(i, name)
        t.start()
        threads.append(t)
    for t in threads:
        t.join()
    print("所有线程执行完毕")
    print("总循环次数为：%s" % num)