Question

我使用twisted和tkinter运行应用程序，将结果发送到服务器，等待服务器发回确认，然后退出。所以，我用来退出的功能是：

def term():
    '''To end the program'''
    reactor.stop()
    root.quit()
    root.destroy()

然后在工厂中设置它，并在协议的dataReceived函数中调用。我运行它，程序运行正常，甚至发送必要的数据并关闭，但它也给我以下错误报告：

Unhandled error in Deferred:
Traceback (most recent call last):
  File "D:\Python25\Lib\site-packages\twisted\internet\base.py", line 1128, in run
    self.mainLoop()
  File "D:\Python25\Lib\site-packages\twisted\internet\base.py", line 1137, in mainLoop
    self.runUntilCurrent()
  File "D:\Python25\Lib\site-packages\twisted\internet\base.py", line 757, in runUntilCurrent
    call.func(*call.args, **call.kw)
  File "D:\Python25\Lib\site-packages\twisted\internet\task.py", line 114, in __call__
    d = defer.maybeDeferred(self.f, *self.a, **self.kw)
--- <exception caught here> ---
  File "D:\Python25\Lib\site-packages\twisted\internet\defer.py", line 106, in maybeDeferred
    result = f(*args, **kw)
  File "D:\Python25\lib\lib-tk\Tkinter.py", line 917, in update
    self.tk.call('update')
_tkinter.TclError: can't invoke "update" command:  application has been destroyed

有谁知道为什么？

Answer 1

您只需拨打reactor.stop即可退出：root.quit()和root.destroy()来电是多余的。考虑这个简短的例子，它运行Twisted和Tk三秒然后退出：

import Tkinter
from twisted.internet import tksupport

root = Tkinter.Tk()
tksupport.install(root)

from twisted.internet import reactor
reactor.callLater(3, reactor.stop)
reactor.run()

Twisted / tkinter程序在退出时崩溃

1 个答案: