title: Python/wxPython: How to reset wx.Choice to a default value
body: <p>Am working with multiple wx.Choice control in wxPython and I needed the make a reset button to restore the default option “-- Select --” when clicked.
  Am unable to achieve that, the closest I came is to reset to empty options which is NOT what is want. I want the default option “-- Select --” to come up when reset button is pressed. See my code below.</p>
  
  <p><strong>data.py</strong></p>
  
  <pre><code>import wx
  
  class MyFrame1 ( wx.Frame ):
  
      def __init__( self, parent ):
          wx.Frame.__init__ ( self, parent, id = wx.ID_ANY, title = wx.EmptyString, pos = wx.DefaultPosition, size = wx.Size( 250,300 ), style = wx.CAPTION|wx.CLOSE_BOX|wx.MINIMIZE_BOX|wx.SYSTEM_MENU|wx.TAB_TRAVERSAL )
  
          self.SetSizeHintsSz( wx.DefaultSize, wx.DefaultSize )
  
          DataBox = wx.BoxSizer( wx.HORIZONTAL )
  
          gSizer2 = wx.GridSizer( 0, 2, 0, 0 )
  
          self.Color_Label = wx.StaticText( self, wx.ID_ANY, u"Color:", wx.DefaultPosition, wx.DefaultSize, 0 )
          self.Color_Label.Wrap( -1 )
          self.Color_Label.SetFont( wx.Font( 13, 70, 90, 90, False, wx.EmptyString ) )
  
          gSizer2.Add( self.Color_Label, 0, wx.ALL, 5 )
  
          Color_optionsChoices = [ u"-- Select --", u"Red", u"Green", u"Pink", u"Blue", u"Yellow", u"White", u"Brown" ]
          self.Color_options = wx.Choice( self, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, Color_optionsChoices, 0 )
          self.Color_options.SetSelection( 0 )
          gSizer2.Add( self.Color_options, 0, wx.ALL, 5 )
  
          self.Age = wx.StaticText( self, wx.ID_ANY, u"Age:", wx.DefaultPosition, wx.DefaultSize, 0 )
          self.Age.Wrap( -1 )
          self.Age.SetFont( wx.Font( 13, 70, 90, 90, False, wx.EmptyString ) )
  
          gSizer2.Add( self.Age, 0, wx.ALL, 5 )
  
          Age_optionsChoices = [ u"-- Select --", u"15", u"16", u"17", u"18", u"19", u"20", u"21", u"22", u"23", u"24", u"25", wx.EmptyString ]
          self.Age_options = wx.Choice( self, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, Age_optionsChoices, 0 )
          self.Age_options.SetSelection( 0 )
          gSizer2.Add( self.Age_options, 0, wx.ALL, 5 )
  
          self.Country = wx.StaticText( self, wx.ID_ANY, u"Country:", wx.DefaultPosition, wx.DefaultSize, 0 )
          self.Country.Wrap( -1 )
          self.Country.SetFont( wx.Font( 13, 70, 90, 90, False, wx.EmptyString ) )
  
          gSizer2.Add( self.Country, 0, wx.ALL, 5 )
  
          Country_optionsChoices = [ u"-- Select --", u"Mexico", u"Peru", u"India", u"USA", u"UK", u"Greece", u"Agentina", u"Greece", u"Brazil", u"Egypt" ]
          self.Country_options = wx.Choice( self, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, Country_optionsChoices, 0 )
          self.Country_options.SetSelection( 0 )
          gSizer2.Add( self.Country_options, 0, wx.ALL, 5 )
  
          self.Reset_button = wx.Button( self, wx.ID_ANY, u"Reset", wx.DefaultPosition, wx.DefaultSize, 0 )
          gSizer2.Add( self.Reset_button, 0, wx.ALL, 5 )
  
          self.Exit_button = wx.Button( self, wx.ID_ANY, u"Exit", wx.DefaultPosition, wx.DefaultSize, 0 )
          gSizer2.Add( self.Exit_button, 0, wx.ALL, 5 )
  
  
          DataBox.Add( gSizer2, 1, wx.EXPAND|wx.ALIGN_CENTER_VERTICAL, 5 )
  
  
          self.SetSizer( DataBox )
          self.Layout()
  
          self.Centre( wx.BOTH )
  
          # Connect Events
          self.Reset_button.Bind( wx.EVT_BUTTON, self.OnResetButton )
          self.Exit_button.Bind( wx.EVT_BUTTON, self.OnExitButton )
  
  
  
  
      def OnResetButton( self, event ):
  
  #       val = '-- Select --'  # NOT WORKING
  
          val = ' '  # THIS WORKS, BUT RESETS TO EMPTY CHOICE
  
          self.Color_options.SetLabel(val)
          self.Age_options.SetLabel(val)
          self.Country_options.SetLabel(val)
  
  
      def OnExitButton( self, event ):
          self.Close()
  
  
  
  
  
  
  
  app = wx.App(0)
  MyFrame1(None).Show()
  app.MainLoop()
  </code></pre>
  
  <p>Thanks for your time in advance.</p>