code: def human_size(size):
      
      if isinstance(size, string_types):
          size = int(size, 10)
  
      if size < 0:
          return "-??? bytes"
  
      if size < 1024:
          return "%4d bytes" % size
      for unit in ("KiB", "MiB", "GiB"):
          size /= 1024.0
          if size < 1024:
              return "%6.1f %s" % (size, unit)
  
      return "%6.1f GiB" % size
docs: Return a human-readable representation of a byte size.
  
          @param size: Number of bytes as an integer or string.
          @return: String of length 10 with the formatted result.