Question

我是python的新手，并试图理解threading.Lock的概念。以下是我输入的示例

#!/usr/bin/python
import threading
import Queue

class suleman(threading.Thread):
        def __init__(self,q,lock):
                threading.Thread.__init__(self)
                self.lock=lock
                self.queue=q
        def run(self):
                self.lock.acquire()
                file=open('sul.txt','a')
                q=self.queue.get()
                print q
                q=str(q)
                file.write(q)   
                self.lock.release()
                self.queue.task_done()

queue=Queue.Queue() 
lock=threading.Lock 
for i in range(0,10):
        z1=suleman(queue,lock) 
        z2=suleman(queue,lock)
        z1.setDaemon(True)
        z2.setDaemon(True) 
        z1.start() 
        z2.start()


for i in range(0,10):
        queue.put(i)
queue.join()

它给出了以下错误：

File "lock.py", line 11, in run
    self.lock.acquire()

AttributeError：'builtin_function_or_method'对象没有属性'acquire'

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Answer 1

Threading.Lock不是锁，它会创建一个锁：

In [1]: import threading

In [2]: threading.Lock
Out[2]: <function thread.allocate_lock>

In [3]: threading.Lock()
Out[3]: <thread.lock at 0x7f9ea666def0>

因此，您需要将lock=threading.Lock更改为lock=threading.Lock()。

Python错误锁定

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