Python列表排序给出了错误的结果

Question

我想在Python中对列表进行排序。我试图做的是：

activities = [[3,1,0,5,8,5],[4,2,6,7,9,9]]
activities.sort(key=lambda x: x[1])
print(activities)

但它不起作用。

我希望列表的排序方式如下：

[1,3,0,5,8,5]
[2,4,6,7,9,9]

Answer 1

所以你想交换每个子列表的前两个元素，然后排序？

activities = [[3,1,0,5,8,5],[4,2,6,7,9,9]]
activities = [a[1::-1] + a[2:] for a in activities]
activities.sort(key=lambda x: x[0])
print(activities)

Answer 2

您需要分别对2个子列表进行排序：

activities = [[3,1,0,5,8,5],[4,2,6,7,9,9]]
activities = activities[0].sort() 
activities = activities[1].sort() 
print(activities)