code: def grid(self, **kw):
          
          ttk.Scrollbar.grid(self, **kw)
          self._layout = 'grid'
docs: Position a widget in the parent widget in a grid. 
          
          :param column: use cell identified with given column (starting with 0)
          :type column: int
          :param columnspan: this widget will span several columns
          :type columnspan: int
          :param in\_: widget to use as container
          :type in\_: widget
          :param ipadx: add internal padding in x direction
          :type ipadx: int
          :param ipady: add internal padding in y direction
          :type ipady: int
          :param padx: add padding in x direction
          :type padx: int
          :param pady: add padding in y irection
          :type pady: int
          :param row: use cell identified with given row (starting with 0)
          :type row: int
          :param rowspan: this widget will span several rows
          :type rowspan: int
          :param sticky: "n", "s", "e", "w" or combinations: if cell is 
                         larger on which sides will this widget stick to 
                         the cell boundary
          :type sticky: str