1. import random
    2. import time
    3. import threading
    4. '''输出为: 12A 34B 56C 78D'''
    6. def show1():
    7.     for i in range(1, 52, 2):
    8.         lock1.acquire()
    9.         print(i, end='')
    10.         print(i+1, end='')
    11.         time.sleep(random. random()/10)
    12.         lock2.release()
    13.         if i == 7:
    14.             break
    16. def show2():
    17.     for i in range(26):
    18.         lock2.acquire()
    19.         print(chr(i + ord('A')))
    20.         time.sleep(random.random() / 10)
    21.         lock1.release()
    22.         if chr(i + ord('A')) == 'D':
    23.             break
    25. if __name__ == '__main__':
    26.     lock1 = threading.Lock()
    27.     lock2 = threading.Lock()
    28.     f1_thread = threading.Thread(target=show1)
    29.     f2_thread = threading.Thread(target=show2)
    30.     lock2.acquire()
    31.     f1_thread.start()
    32.     f2_thread.start()