parameters: (self, loader)
docstring: Set the loader for all data files
              @param loader: ReductionStep object
docstring_summary: Set the loader for all data files
docstring_tokens: Set the loader for all data files
function: def set_data_loader(self, loader):
          """
              Set the loader for all data files
              @param loader: ReductionStep object
          """
          if issubclass(loader.__class__, ReductionStep):
              self._data_loader = loader
          else:
              raise RuntimeError("Reducer.set_data_loader expects an object of class ReductionStep")
function_tokens: def set_data_loader ( self , loader ) : if issubclass ( loader . __class__ , ReductionStep ) : self . _data_loader = loader else : raise RuntimeError ( "Reducer.set_data_loader expects an object of class ReductionStep" )