code: def bytes(random_state, length):
      """
      Return random bytes.
  
      Parameters
      ----------
      length : int
          Number of random bytes.
  
      Returns
      -------
      out : str
          String of length `length`.
  
      Examples
      --------
      >>> import mars.tensor as mt
  
      >>> mt.random.bytes(10)
      ' eh\x85\x022SZ\xbf\xa4' #random
      """
      return random_state._random_state.bytes(length)
  
label_desc: Use image node_id 1 for calling a global function with example usage: bytes(random_state, length) and returns: random_state