code: def add(self, path):
          
          name_with_ext = os.path.split(path)[1]  # split directory and filename
          name = name_with_ext.split('.')[0]  # remove extension
          self.list.update({name: path})
docs: Add the path of a data set to the list of available sets
  
          NOTE: a data set is assumed to be a pickled
          and gzip compressed Pandas DataFrame
  
          Parameters
          ----------
          path : str