wx.ListCtrl.Append columnas vacias

[Nano-rosario]

self es la clase que cree MyList que es un ListCtrl con columnSortenMixin, todavia no probe sacar el ordenamiento de columnas porque tambien observe que en linux me ordena-
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11
22

y en windows
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3

osea lo toma como string en windows....

Código:

class MyList(wx.ListCtrl, listmix.ColumnSorterMixin):
    def __init__(self, parent,style= wx.LC_REPORT
                                    | wx.BORDER_SIMPLE  
                                    | wx.LC_SORT_ASCENDING
                                    | wx.LC_SINGLE_SEL 
                                    | wx.LC_AUTOARRANGE):
        wx.ListCtrl.__init__(self,parent,style = style)
        
        self.myEVT_ITEMSEL = wx.NewEventType() 
        self.EVT_ITEMSEL = wx.PyEventBinder(self.myEVT_ITEMSEL, 1)
        self.il16 = Custom.Il_16(self)
        self.il = wx.ImageList(16, 16)
        self.sm_up = self.il.AddWithColourMask(self.il16.sm_up, "blue")
        self.sm_dn = self.il.AddWithColourMask(self.il16.sm_dw, "blue")
        self.AssignImageList(self.il, wx.IMAGE_LIST_SMALL)
        self.__Events__()

        self.data = {}        
        self.li = [] # Lista cargada actualmente
        self.colums= []
        self.conn = Conn.GestorBD()        
        
    def __Events__(self):
        self.Bind(wx.EVT_LIST_ITEM_SELECTED, self.OnDoubleClick)
        self.Bind(wx.EVT_LIST_ITEM_ACTIVATED, self.OnDoubleClick)
           
    # Used by the ColumnSorterMixin, see wx/lib/mixins/listctrl.py
    def GetListCtrl(self):
        return self
    def GetSortImages(self):
        return (self.sm_dn, self.sm_up)

    def OnDoubleClick(self, event):
        id = event.m_itemIndex
        id = self.GetItemText(id)    
        event = MyEvent(self.myEVT_ITEMSEL, self.GetId())
        event.SetMyVal(id) 
        self.GetEventHandler().ProcessEvent(event)

    def Insert_Columns(self,cols):
        for i,c in enumerate(cols):
            self.InsertColumn(i,c)
        
    def Load_from_sql(self,sql):
        resultado = self.conn.Query(sql,2)
        if not resultado == False:
            self.Load_from_list(resultado)
        
    def Load_from_list(self,list,preserve_list = False):
        self.DeleteAllColumns()
        self.DeleteAllItems()
        self.data.clear()
        if not preserve_list:
            self.li = list           
        self.Insert_Columns(self.colums)
        for i,registro in enumerate(list):
            index = self.Append(registro)
            self.data[i]=registro
            self.SetItemData(index, index)
        self.itemDataMap = self.data
        listmix.ColumnSorterMixin.__init__(self, len(self.colums))
        
        for i,c in enumerate(self.colums):
            self.SetColumnWidth(i, wx.LIST_AUTOSIZE_USEHEADER)
            
    def filter(self, st,col=None):
        newli = []
        if not st:
            self.Load_from_list(self.li,True)
            return
        st = st.lower()
        for reg in self.li:
            if col == None:
                for r in reg:
                    if st in str(r).lower():newli.append(reg)
            else:
                if st in str(reg[col]).lower():newli.append(reg)
        self.Load_from_list(newli,True)