docs: def new_dxfile(mode=None, write_buffer_size=dxfile.DEFAULT_BUFFER_SIZE, expected_file_size=None, file_is_mmapd=False,
                 **kwargs):
      '''
      :param mode: One of "w" or "a" for write and append modes, respectively
      :type mode: string
      :rtype: :class:`~dxpy.bindings.dxfile.DXFile`
  
      Additional optional parameters not listed: all those under
      :func:`dxpy.bindings.DXDataObject.new`.
  
      Creates a new remote file object that is ready to be written to;
      returns a :class:`~dxpy.bindings.dxfile.DXFile` object that is a
      writable file-like object.
  
      Example::
  
          with new_dxfile(media_type="application/json") as fd:
              fd.write("foo\\n")
  
      Note that this is shorthand for::
  
          dxFile = DXFile()
          dxFile.new(**kwargs)
  
      '''
      dx_file = DXFile(mode=mode, write_buffer_size=write_buffer_size, expected_file_size=expected_file_size,
                       file_is_mmapd=file_is_mmapd)
      dx_file.new(**kwargs)
      return dx_file