python练习笔记——用列表推导式生成二维列表

用列表推导式如何生成如下列表:[[1, 2, 3], [4, 5, 6], [7, 8, 9]]

inner_list = []
outer_list = []

for i in range(1,10):
    inner_list.append(i)
    if i % 3 == 0:
        outer_list.append(inner_list)
        inner_list = []

print(outer_list)

运行

[[1, 2, 3], [4, 5, 6], [7, 8, 9]]