1.推导式:做一些有规律的数据结构 列表推导式: 普通循环模式: [加工后的变量 for 循环] 示例一:print([i for i in range(1,51)]) 结果:[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43