code: def consts(self):
          
          # We cannot use a set comprehension because consts do not need
          # to be hashable.
          consts = []
          append_const = consts.append
          for instr in self.instrs:
              if isinstance(instr, LOAD_CONST) and instr.arg not in consts:
                  append_const(instr.arg)
          return tuple(consts)
docs: The constants referenced in this code object.