实际上,我在IDLE(python3.5.2shell)和Pycharm社区版2017.2中运行和调试这些代码。 但是当我运行代码很多次时,我发现有一些问题让我困惑。在pycharm中运行的代码将生成以下结果:
在pycharm中运行的代码将生成以下结果:
如你所见,“1 3 2 3 1 2 1”和“2 3 1 2 3 1 2”。我跑了很多次才找到这个。所以我只想知道,为什么线程方法在不同的IDE中是不同的?你能告诉我一些学习Python线的好方法吗?
import queue
import threading
import time
exitFlag = 0
class myThread(threading.Thread):
def __init__(self, threadID, name, q):
threading.Thread.__init__(self)
self.threadID = threadID
self.name = name
self.q = q
def run(self):
print("Open Thread:" + self.name)
process_data(self.name, self.q)
print("Exit Thread:" + self.name)
def process_data(threadName, q):
while not exitFlag:
queueLock.acquire()
if not workQueue.empty():
data = q.get()
print("%s processing %s" % (threadName, data))
queueLock.release()
else:
queueLock.release()
time.sleep(1)
threadList = ["Thread-1", "Thread-2", "Thread-3"]
nameList = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight"]
queueLock = threading.Lock()
workQueue = queue.Queue(10)
threads = []
threadID = 1
for tname in threadList:
thread = myThread(threadID, tname, workQueue)
thread.start()
threads.append(thread)
threadID += 1
queueLock.acquire()
for word in nameList:
#print(workQueue.empty())
workQueue.put(word)
#time.sleep(1)
queueLock.release()
while not workQueue.empty():
pass
exitFlag = 1
for t in threads:
t.join()
print("Exit Main Thread")
线程不保证它们将以任何顺序执行,这就是为什么在不同的执行中得到不同的结果。 因此线程不依赖于IDE
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