code: def p_object_const_list(self, p):
          '''object_const_list : object_const_list COMMA IDENT
                               | IDENT'''
          if len(p) == 4:
              p[1].append(p[3])
              p[0] = p[1]
          elif len(p) == 2:
              p[0] = [p[1]f p_object_const_list(self, p):
          '''object_const_list : object_const_list COMMA IDENT
                               | IDENT'''
          if len(p) == 4:
              p[1].append(p[3])
              p[0] = p[1]
          elif len(p) == 2:
              p[0] = [p[1]]
docs: object_const_list : object_const_list COMMA IDENT
                               | IDENT