formatter = "%r %r %r %r"print formatter % (? ? "I had this thing.",? ? "That you could type up right.",? ? "But it didn't sing.",? ? "So I said goodnight.")上邊這段程序結(jié)果如下：'I had this thing.' 'That you could type up right.' "But it didn't sing." 'So I said goodnight.'為什么有的是‘ ? ? ’有的是‘’‘’？