Discuss / Python / import time, threading # 假定这是你的银行存款: balance = 0 def change_it(n): # 先存后取，结果应该为0: global b
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import time, threading # 假定这是你的银行存款: balance = 0 def change_it(n): # 先存后取，结果应该为0: global b

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-执岸画布-

#1 Created at ... [Delete] [Delete and Lock User]

为什么我执行Lock那边的那段代码，输出的是0

木尐白

#2 Created at ... [Delete] [Delete and Lock User]

你需要多次尝试，会出现几次不是0的情况

IceWeet

#3 Created at ... [Delete] [Delete and Lock User]

你在循环次数后面多加一个0试试，如果不行就再加一个，就很容易出现非0的情况了

走庄子路线

#4 Created at ... [Delete] [Delete and Lock User]

难道结果不应该是0吗，不是都lock了吗，每次一加一减的，不是0吗？

均分粑粑

#5 Created at ... [Delete] [Delete and Lock User]

对啊，加锁后不是0是什么？

牛人QW伟

#6 Created at ... [Delete] [Delete and Lock User]

在整体代码外面再嵌套一层循环，就能看出效果了

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