code: def _process_function_list(self, routines):
      
  
      def processing(*args, **kwargs):
          """Execute routines with input args and kwargs and add result in
          chaining.___.
  
          :param tuple args: routines varargs.
          :param dict kwargs: routines kwargs.
          :return: chaining chaining.
          :rtype: Chaining
          """
  
          results = [None] * len(routines)
          for index, routine in enumerate(routines):
              if isinstance(routine, Exception):
                  result = routine
              else:
                  try:
                      result = routine(*args, **kwargs)
                  except AttributeError as excp:
                      result = excp
              results[index] = result
          self.___.append(results)
  
          return self
  
      return processing
docs: Chain function which returns a function.
  
      :param routines: routines to process.