重启线程定时器错误

Question

我看到并阅读了关于堆栈的回答问题，但我仍然不知道如何修复它。

请帮忙我很高兴。

下面是我的代码:

#!/usr/local/bin/python
import threading
class TaskManagmentHandler:
    # Handle tasks from server
    MINUTES_TO_FIRST_TASK = 5
    MINUTES_TO_NORMAL_TASK = 20
    MINUTES_TO_FAILED_TASK = 20
    global currentAwaitingTime
    currentAwaitingTime = MINUTES_TO_FIRST_TASK
    def executeTaskFromServer(self):
        print ("hi!")
        self.currentAwaitingTime = self.MINUTES_TO_NORMAL_TASK
        taskThread = threading.Timer(self.currentAwaitingTime, self.executeTaskFromServer())
        taskThread.start()
    # start normal task after 5 minutes
    # start cycled task every 20 minutes (task call itself after 20 minutes)
    if __name__ == "__main__":
        print ("hello!")
        taskThread = threading.Timer(currentAwaitingTime, executeTaskFromServer)
        taskThread.start()

这里是我遇到的错误:

hello!
Exception in thread Thread-1:
Traceback (most recent call last):
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py", line 810, in __bootstrap_inner
    self.run()
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py", line 1082, in run
    self.function(*self.args, **self.kwargs)
TypeError: executeTaskFromServer() takes exactly 1 argument (0 given)

Process finished with exit code 0

即使我在executeTaskFromServer中标记所有代码并只是打印'hi'，我仍然有同样的问题。

我甚至尝试了class TaskManagmentHandler():，但它没有解决我的问题。

Answer 1

您忘记了self(因为您的代码在方法下缩进)

taskThread = threading.Timer(currentAwaitingTime, self.executeTaskFromServer)

但这是你实际上应该做的，将代码移出类并创建一个新对象，然后调用executeTaskFromServer方法

if __name__ == "__main__":
    print ("hello!")
    task_mgr = TaskManagmentHandler()
    task_mgr.executeTaskFromServer()

你只需要启动线程一次