code: def move(self, lr, fb, vv, va):
          
          self.at(ardrone.at.pcmd, True, lr, fb, vv, va)
docs: Makes the drone move (translate/rotate).
  
          Parameters:
          lr -- left-right tilt: float [-1..1] negative: left, positive: right
          fb -- front-back tilt: float [-1..1] negative: forwards, positive:
              backwards
          vv -- vertical speed: float [-1..1] negative: go down, positive: rise
          va -- angular speed: float [-1..1] negative: spin left, positive: spin
              right