docs: def _set_init_vars_and_dims(self, data_vars, coords, compat):
          """Set the initial value of Dataset variables and dimensions
          """
          both_data_and_coords = [k for k in data_vars if k in coords]
          if both_data_and_coords:
              raise ValueError('variables %r are found in both data_vars and '
                               'coords' % both_data_and_coords)
  
          if isinstance(coords, Dataset):
              coords = coords.variables
  
          variables, coord_names, dims = merge_data_and_coords(
              data_vars, coords, compat=compat)
  
          self._variables = variables
          self._coord_names = coord_names
          self._dims = dims