关于多线程：Python实例变量是否是线程安全的？

Are Python instance variables thread-safe?

好的，首先检查以下代码：

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class DemoClass():

def __init__(self):
#### I really want to know if self.Counter is thread-safe.
self.Counter = 0

def Increase(self):
self.Counter = self.Counter + 1

def Decrease(self):
self.Counter = self.Counter - 1

def DoThis(self):
while True:
Do something

if A happens:
self.Increase()
else:
self.Decrease()

time.sleep(randomSecs)

def DoThat(self):
while True:
Do other things

if B happens:
self.Increase()
else:
self.Decrease()

time.sleep(randomSecs)

def ThreadSafeOrNot(self):
InterestingThreadA = threading.Thread(target = self.DoThis, args = ())
InterestingThreadA.start()

InterestingThreadB = threading.Thread(target = self.DoThat, args = ())
InterestingThreadB.start()

我正面临与上述情况相同的情况。我真的想知道它是否对self.Counter是线程安全的，如果不是，我有什么选择？我只能想到threading.RLock()来锁定这个资源，有什么更好的主意吗？

您可以使用锁、rlocks、信号量、条件、事件和队列。这篇文章对我帮助很大。看看：劳伦特·卢斯的博客