def linear_search(data_list, value): for i in range(len(data_list)): if data_list[i] == value: return i return '未找到'data = list(range(200))res = linear_search(data, 33)print(res) # 找到了就会返回它的下标,data里第一个元素是0,下标也是0,如果没有找到就会打印未找到