code: def parse_from_file(filename, nodata=False):
      
      header = None
      with open(filename, "rb") as file:
          header = read_machine_header(file)
          meta_raw = file.read(header['meta_len'])
          meta = __parse_meta(meta_raw, header)
          data = b''
          if not nodata:
              data = __decompress(meta, file.read(header['data_len']))
  
          return header, meta, data
docs: Parse df message from file.
  
      @filename - path to file
      @nodata - do not load data
      @return - [binary header, metadata, binary data]