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864天前from time import sleep |
from threading import Thread, Lock |
class Account(object): |
def __init__(self): |
self._balance = 0 |
self._lock = Lock() |
def deposit(self, money): |
# 先获取锁才能执行后续的代码 |
self._lock.acquire() |
try: |
new_balance = self._balance + money |
sleep(0.01) |
self._balance = new_balance |
finally: |
# 在finally中执行释放锁的操作保证正常异常锁都能释放 |
self._lock.release() |
@property |
def balance(self): |
return self._balance |
class AddMoneyThread(Thread): |
def __init__(self, account, money): |
super().__init__() |
self._account = account |
self._money = money |
def run(self): |
self._account.deposit(self._money) |
def main(): |
account = Account() |
threads = [] |
for _ in range(100): |
t = AddMoneyThread(account, 1) |
threads.append(t) |
t.start() |
for t in threads: |
t.join() |
print('账户余额为: ￥%d元' % account.balance) |
if __name__ == '__main__': |
main() |
