code: def to_msgpack(self, path_or_buf=None, encoding='utf-8', **kwargs):
          
  
          from pandas.io import packers
          return packers.to_msgpack(path_or_buf, self, encoding=encoding,
                                    **kwargs)
docs: Serialize object to input file path using msgpack format.
  
          THIS IS AN EXPERIMENTAL LIBRARY and the storage format
          may not be stable until a future release.
  
          Parameters
          ----------
          path : string File path, buffer-like, or None
              if None, return generated string
          append : bool whether to append to an existing msgpack
              (default is False)
          compress : type of compressor (zlib or blosc), default to None (no
              compression)