def _do_layout(self):
        """Sizer hell, returns a sizer that contains all widgets"""

        sizer_csvoptions = wx.FlexGridSizer(5, 4, 5, 5)

        # Adding parameter widgets to sizer_csvoptions
        leftpos = wx.LEFT | wx.ADJUST_MINSIZE
        rightpos = wx.RIGHT | wx.EXPAND

        current_label_margin = 0  # smaller for left column
        other_label_margin = 15

        for label, widget in zip(self.param_labels, self.param_widgets):
            sizer_csvoptions.Add(label, 0, leftpos, current_label_margin)
            sizer_csvoptions.Add(widget, 0, rightpos, current_label_margin)

            current_label_margin, other_label_margin = \
                other_label_margin, current_label_margin

        sizer_csvoptions.AddGrowableCol(1)
        sizer_csvoptions.AddGrowableCol(3)

        self.sizer_csvoptions = sizer_csvoptions
Sizer hell, returns a sizer that contains all widgets