简单实现多线程
import threading import time def sing(sing): for i in range(5): print("---sing()---{}".format(sing)) time.sleep(1) def dance(dance): for i in range(5): print("---dance()---{}".format(dance)) time.sleep(1) def main(): t1 = threading.Thread(target=sing,args=("t1",)) t2 = threading.Thread(target=dance,args=("t2",)) t1.start() t2.start() if __name__ == "__main__": main()
多线程互斥锁
import threading import time A = 2 lock = threading.Lock() #创建一个互斥锁 def sing(sing): global A for i in range(500000): lock.acquire() #加锁 A += 1 lock.release() #解锁 print('{}:{}'.format(sing,i)) def dance(dance): global A for i in range(500000): lock.acquire() #加锁 A -= 1 lock.release() #解锁 print('{}:{}'.format(dance,i)) def main(): global A t1 = threading.Thread(target=sing,args=("t1",)) t2 = threading.Thread(target=dance,args=("t2",)) t1.start() t2.start() t1.join() t2.join() print(A) if __name__ == "__main__": main()