wx.DatePickerCtrl怎样设置值？

s = '2004-09-01'
tmp = ls.split('-')
self.arrdate = wx.DatePickerCtrl(id=wxID_DIALOG1DATEPICKERCTRL2,
              name='arrdate', parent=self, pos=wx.Point(64, 20,
              size=wx.Size(104, 22), style=wx.DP_DROPDOWN | wx.DP_SHOWCENTURY)


self.arrdate.SetValue(datetime.datetime(int(tmp[0]),int(tmp[1]),int(tmp[2])))