1 from threading import Thread,Lock 2  3 g_num = 0 4  5 def test1(): 6     global g_num 7     #上锁 8     mutex.acquire() 9     for i in range(100000):10         g_num +=111     #解锁12     mutex.release()13 14     print("test1----g_num= %d"%g_num)15 16 def test2():17     global g_num18     #上锁19     mutex.acquire()20     for i in range(100000):21         g_num += 122     #解锁23     mutex.release()24     print("test2----g_num = %d"%g_num)25 26 27 # 创建互斥锁28 mutex = Lock()29 p1 = Thread(target = test1)30 p1.start()31 32 p2 = Thread(target = test2)33 p2.start()34 35 p1.join()36 p2.join()37 38 print("---g_num---%d"%g_num)

test1----g_num= 100000test2----g_num = 200000---g_num---200000