code: def shift_display(self, amount):
          
          if amount == 0:
              return
          direction = c.LCD_MOVERIGHT if amount > 0 else c.LCD_MOVELEFT
          for i in range(abs(amount)):
              self.command(c.LCD_CURSORSHIFT | c.LCD_DISPLAYMOVE | direction)
              c.usleep(50)
docs: Shift the display. Use negative amounts to shift left and positive
          amounts to shift right.