code: def pcmd(host, seq, progressive, lr, fb, vv, va):
      
      p = 1 if progressive else 0
      at(host, 'PCMD', seq, [p, float(lr), float(fb), float(vv), float(va)])
docs: Makes the drone move (translate/rotate).
  
      Parameters:
      seq -- sequence number
      progressive -- True: enable progressive commands, False: disable (i.e.
          enable hovering mode)
      lr -- left-right tilt: float [-1..1] negative: left, positive: right
      rb -- 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
  
      The above float values are a percentage of the maximum speed.