wx.FileDialog打开文件窗口读取文件

# -*- coding: utf-8 -*-
"""
Created on Thu Dec 27 23:07:01 2018
QQ群：476842922（欢迎加群讨论学习
@author: Administrator
"""
import wx

class MyFrame2 ( wx.Frame ):

	response = ""
	
	def __init__( self, parent ):
		wx.Frame.__init__ ( self, parent, id = wx.ID_ANY, title = wx.EmptyString, pos = wx.DefaultPosition, size = wx.Size( 500,300 ), style = wx.DEFAULT_FRAME_STYLE|wx.TAB_TRAVERSAL )
		
		self.SetSizeHintsSz( wx.DefaultSize, wx.DefaultSize )
		
		self.m_menubar3 = wx.MenuBar( 0 )
		self.m_menu6 = wx.Menu()
		self.m_menuItem3 = wx.MenuItem( self.m_menu6, wx.ID_ANY, u"Open", wx.EmptyString, wx.ITEM_NORMAL )
		self.m_menu6.AppendItem( self.m_menuItem3 )
		
		self.m_menuItem4 = wx.MenuItem( self.m_menu6, wx.ID_ANY, u"Save", wx.EmptyString, wx.ITEM_NORMAL )
		self.m_menu6.AppendItem( self.m_menuItem4 )
		
		self.m_menubar3.Append( self.m_menu6, u"File" ) 
		
		self.SetMenuBar( self.m_menubar3 )
		
		bSizer2 = wx.BoxSizer( wx.VERTICAL )
		
		self.m_textCtrl2 = wx.TextCtrl( self, wx.ID_ANY, wx.EmptyString, wx.DefaultPosition, wx.Size( 600,600 ), 0)
		self.m_textCtrl2.SetBackgroundColour('Black')
		self.m_textCtrl2.SetForegroundColour('Green')
		self.SetTransparent(200)
		bSizer2.Add( self.m_textCtrl2, 0, wx.ALL, 5 )
		
		
		self.SetSizer( bSizer2 )
		self.Layout()
		
		self.Centre( wx.BOTH )
		
		# Connect Events
		self.Bind( wx.EVT_MENU, self.open, id = self.m_menuItem3.GetId() )
		self.Bind( wx.EVT_MENU, self.save, id = self.m_menuItem4.GetId() )
	
	def __del__( self ):
		pass

	def save( self, event ):
		file=open("temFile.txt",'w')
		file.write(self.m_textCtrl2.GetValue())
		file.close()

	def open(self, event):
		file_wildcard = "Paint files(*.paint)|*.paint|All files(*.*)|*.*" 
		dlg = wx.FileDialog(self, "Open XYZ file", wildcard="XYZ files (*.xyz)|*.xyz",style=wx.FD_OPEN | wx.FD_FILE_MUST_EXIST)
		if dlg.ShowModal() == wx.ID_OK:
		    self.filename = dlg.GetPath()
		    self.ReadFile()
		    self.SetTitle(self.title + '--' + self.filename)
		dlg.Destroy()
        

def main():
    app = wx.App()
    ex = MyFrame2(None)
    ex.Show()
    app.MainLoop()


if __name__ == '__main__':
    main()