code: def set_real(_bytearray, byte_index, real):
      
      real = float(real)
      real = struct.pack('>f', real)
      _bytes = struct.unpack('4B', real)
      for i, b in enumerate(_bytes):
          _bytearray[byte_index + i] = b
docs: Set Real value
  
      make 4 byte data from real