根据列表中字典中的某个value排序

1 li = [{‘a‘:1,‘b‘:4},{‘a‘:2,‘b‘:3},{‘a‘:3,‘b‘:2},{‘a‘:4,‘b‘:1}]
2 print(‘li‘,li)
3 #根据a的值倒序排序
4 liNew = sorted(li,key=lambda e:e.__getitem__(‘a‘),reverse=True)
5 print(‘liNew‘,liNew)
6 #根据a的值倒序排序
7 liNew2 = sorted(li,key=lambda e:e[‘a‘],reverse=True)
8 print(‘liNew2‘,liNew2)

结果展示：

1 li [{‘a‘: 1, ‘b‘: 4}, {‘a‘: 2, ‘b‘: 3}, {‘a‘: 3, ‘b‘: 2}, {‘a‘: 4, ‘b‘: 1}]
2 liNew [{‘a‘: 4, ‘b‘: 1}, {‘a‘: 3, ‘b‘: 2}, {‘a‘: 2, ‘b‘: 3}, {‘a‘: 1, ‘b‘: 4}]
3 liNew2 [{‘a‘: 4, ‘b‘: 1}, {‘a‘: 3, ‘b‘: 2}, {‘a‘: 2, ‘b‘: 3}, {‘a‘: 1, ‘b‘: 4}]

原文地址：https://www.cnblogs.com/whycai/p/12173229.html