wxpython中利用线程防止假死的实现方法

# -*- coding: utf-8 -*-
 
import time
import wx
from threading import Thread
from wx.lib.pubsub import Publisher

class TestThread(Thread):
 def __init__(self):
  #线程实例化时立即启动
  Thread.__init__(self)
  self.start()
 def run(self):
  #线程执行的代码
  for i in range(101):
   time.sleep(0.03)
   wx.CallAfter(Publisher().sendMessage, "update", i)
  time.sleep(0.5)
  wx.CallAfter(Publisher().sendMessage, "update", u"线程结束")

class MyForm ( wx.Frame ):
 def __init__( self, parent ):
  wx.Frame.__init__ ( self, parent, id = wx.ID_ANY, title = u"Leniy，20140627", pos = wx.DefaultPosition, size = wx.Size( -1,-1 ), style = wx.DEFAULT_FRAME_STYLE|wx.TAB_TRAVERSAL )
  self.SetSizeHintsSz( wx.DefaultSize, wx.DefaultSize )
  gSizer2 = wx.GridSizer( 0, 3, 0, 0 )
  self.m_button2 = wx.Button( self, wx.ID_ANY, u"执行线程", wx.DefaultPosition, wx.DefaultSize, 0 )
  gSizer2.Add( self.m_button2, 0, wx.ALL|wx.ALIGN_CENTER_HORIZONTAL|wx.ALIGN_CENTER_VERTICAL, 5 )
  self.m_staticText2 = wx.StaticText( self, wx.ID_ANY, u"MyLabel", wx.DefaultPosition, wx.DefaultSize, 0 )
  self.m_staticText2.Wrap( -1 )
  gSizer2.Add( self.m_staticText2, 0, wx.ALL|wx.ALIGN_CENTER_HORIZONTAL|wx.ALIGN_CENTER_VERTICAL, 5 )
  self.m_gauge1 = wx.Gauge( self, wx.ID_ANY, 100, wx.DefaultPosition, wx.DefaultSize, wx.GA_HORIZONTAL )
  self.m_gauge1.SetValue( 0 ) 
  gSizer2.Add( self.m_gauge1, 0, wx.ALL|wx.ALIGN_CENTER_HORIZONTAL|wx.ALIGN_CENTER_VERTICAL, 5 )
  self.SetSizer( gSizer2 )
  self.Layout()
  gSizer2.Fit( self )
  self.Centre( wx.BOTH )
  self.m_button2.Bind( wx.EVT_BUTTON, self.onButton )
  Publisher().subscribe(self.updateDisplay, "update")
 def updateDisplay(self, msg):
  t = msg.data
  if isinstance(t, int):#如果是数字，说明线程正在执行，显示数字
   self.m_staticText2.SetLabel("%s%%" % t)
   self.m_gauge1.SetValue( t )
  else:#否则线程未执行，将按钮重新开启
   self.m_staticText2.SetLabel("%s" % t)
   self.m_button2.Enable()
 def onButton( self, event ):
  TestThread()
  self.m_staticText2.SetLabel(u"线程开始")
  event.GetEventObject().Disable()

if __name__ == "__main__":
 app = wx.PySimpleApp()
 MyForm(None).Show()
 app.MainLoop()