code: def save_default_values(dsp, path):
      
      import dill
      with open(path, 'wb') as f:
          dill.dump(dsp.default_values, f)
docs: Write Dispatcher default values in Python pickle format.
  
      Pickles are a serialized byte stream of a Python object.
      This format will preserve Python objects used as nodes or edges.
  
      :param dsp:
          A dispatcher that identifies the model adopted.
      :type dsp: schedula.Dispatcher
  
      :param path:
          File or filename to write.
          File names ending in .gz or .bz2 will be compressed.
      :type path: str, file
  
      .. testsetup::
          >>> from tempfile import mkstemp
          >>> file_name = mkstemp()[1]
  
      Example::
  
          >>> from schedula import Dispatcher
          >>> dsp = Dispatcher()
          >>> dsp.add_data('a', default_value=1)
          'a'
          >>> dsp.add_function(function=max, inputs=['a', 'b'], outputs=['c'])
          'max'
          >>> save_default_values(dsp, file_name)