python线程简单练习

import threading
import time
 
 
class myThread(threading.Thread):
    def __init__(self, threadID, name, counter):
        threading.Thread.__init__(self)
        self.threadID = threadID
        self.name = name
        self.counter = counter
 
    def run(self):
        print( "Starting " + self.name)
        # 获得锁，成功获得锁定后返回True
        # 可选的timeout参数不填时将一直阻塞直到获得锁定
        # 否则超时后将返回False
        threadLock.acquire()
        print_time(self.name, self.counter, 10)
        # 释放锁
        threadLock.release()
 
 
def print_time(threadName, delay, counter):
    while counter:
        time.sleep(delay)
        print("%s: %s" % (threadName, time.ctime(time.time())))
        counter -= 1
 
 
 
 
if __name__ == "__main__":
 
    threadLock = threading.Lock()
    threads = []
 
    # 创建新线程
    thread1 = myThread(1, "Thread-1", 1)
    thread2 = myThread(2, "Thread-2", 1)
 
    # 开启新线程
    thread1.start()
    thread2.start()
 
    # 添加线程到线程列表
    threads.append(thread1)
    threads.append(thread2)
 
    # 等待所有线程完成
    for t in threads:
        t.join()
    print ("Exiting Main Thread")

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