code: def to_msgpack(path_or_buf, *args, **kwargs):
      
      global compressor
      compressor = kwargs.pop('compress', None)
      append = kwargs.pop('append', None)
      if append:
          mode = 'a+b'
      else:
          mode = 'wb'
  
      def writer(fh):
          for a in args:
              fh.write(pack(a, **kwargs))
  
      path_or_buf = _stringify_path(path_or_buf)
      if isinstance(path_or_buf, str):
          with open(path_or_buf, mode) as fh:
              writer(fh)
      elif path_or_buf is None:
          buf = BytesIO()
          writer(buf)
          return buf.getvalue()
      else:
          writer(path_or_buf)
docs: msgpack (serialize) object to input file path
  
      THIS IS AN EXPERIMENTAL LIBRARY and the storage format
      may not be stable until a future release.
  
      Parameters
      ----------
      path_or_buf : string File path, buffer-like, or None
                    if None, return generated string
      args : an object or objects to serialize
      encoding : encoding for unicode objects
      append : boolean whether to append to an existing msgpack
               (default is False)
      compress : type of compressor (zlib or blosc), default to None (no
                 compression)