python基础练习之列表生成

练习

生成一个[[1,2,3],[4,5,6]…]的列表最大值在100以内

a = [(i,j,k) for i in range(1,99,3)  for j in range(i+1,i+2) for k in range(i+2,i+3) ]
print(a)

运行结果：

[(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, 44, 45), (46, 47, 48), (49, 50, 51), (52, 53, 54), (55, 56, 57), (58, 59, 60), (61, 62, 63), (64, 65, 66), (67, 68, 69), (70, 71, 72), (73, 74, 75), (76, 77, 78), (79, 80, 81), (82, 83, 84), (85, 86, 87), (88, 89, 90), (91, 92, 93), (94, 95, 96), (97, 98, 99)]

请写出一段 Python 代码实现分组一个 list 里面的元素,比如 [1,2,3,…100]变成 [[1,2,3],[4,5,6]…]

a = [i for i in range(1,101)]
b = [a[j:j+3] for j in range(0,100,3)]
print(b)

运行结果：

[[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, 44, 45], [46, 47, 48], [49, 50, 51], [52, 53, 54], [55, 56, 57], [58, 59, 60], [61, 62, 63], [64, 65, 66], [67, 68, 69], [70, 71, 72], [73, 74, 75], [76, 77, 78], [79, 80, 81], [82, 83, 84], [85, 86, 87], [88, 89, 90], [91, 92, 93], [94, 95, 96], [97, 98, 99], [100]]