def move_up ( self ):
        list, index = self.get_info()
        self.value  = (list[:index-1] + [ list[index], list[index-1] ] +
                       list[index+1:])
        self.update_editor()

    #---------------------------------------------------------------------------
    #  Moves the current item down one in the list:
    #---------------------------------------------------------------------------
Move the current item up one in the list.
dataset/ETHPy150Open enthought/traitsui/traitsui/wx/list_editor.py/SimpleEditor.move_up