• lock = threading.Lock()
    • 上锁lock.acquire()
    • 释放锁lock.release
    1. import threading
    2. import time
    3. num = 0
    4. lock = threading.Lock()
    6. def first():
    7.     lock.acquire()
    8.     for item in range(100000):
    9.         global num
    10.         num = num + 1
    11.         pass
    12.     lock.release()
    13.     print("rask1:", num)
    14.     pass
    16. def second():
    17.     lock.acquire()
    18.     for item in range(100000):
    19.         global num
    20.         num = num + 1
    21.         pass
    22.     lock.release()
    23.     print("rask2:", num)
    24.     pass
    26. if __name__ == '__main__':
    27.     first_thread = threading.Thread(target=first)
    28.     second_thread = threading.Thread(target=second)
    29.     first_thread.start()
    30.     second_thread.start()