[Tutor] Reading in file and processing it in a thread

[Vicki Stanfield]

>         #Test thread code
>         thread2 = thread.start_new_thread(self.ThreadTest, ())

Okay, I have set this up as the above code calling this:

   def ThreadTest(self):
        print "Got into ThreadTest"
        
        inputfile = self.filesel.GetFilename()
        input = open('C:/'+inputfile, 'r')
        tokens=""

        
        while STOP_READ != wx.TRUE or first_iteration == wx.TRUE:
            for line in input.readlines():
                if len(line)>1:
                    first_iteration == wx.FALSE
                    tokens=line.split("|")

                    self.command = tokens[0][0]+tokens[0][1]
                    self.arguments = tokens[0].lstrip(tokens[0][0]+tokens[0][1]+" ")
                    print self.command
                    print self.arguments
                    self.ProcessCommand(self.command, self.arguments)
                    #wx.GetApp().Yield()
                else:
                    input.close()

But I get a strange error:

Got into ThreadTest
Unhandled exception in thread started by <bound method ComboBoxPanel.ThreadTest
of <__main__.ComboBoxPanel instance; proxy of C++ wxPanel instance at _8296c0_wx
Panel_p>>
Traceback (most recent call last):
  File "F:\wxComTool1.1.py", line 252, in ThreadTest
    inputfile = self.filesel.GetFilename()
  File "C:\Python23\Lib\site-packages\wxPython\wx.py", line 1834, in __getattr__

    raise wxPyDeadObjectError( self.attrStr % self._name )
wxPython.wx.wxPyDeadObjectError: The C++ part of the wxFileDialog object has bee
n deleted, attribute access no longer allowed.

Can anyone explain to me what I am doing wrong? If this same code is included where the call to
start_new_thread is, it works except that I am unable to get back to the gui to uncheck the checkbox.
It needs to be a different thread, so what am I doing wrong?

Thanks,

--vicki