itemgetter函数：对字典列表进行多键排序
from operator import itemgetter list_people = [
{'name': 'Mike', 'age': 22, 'score': 90},
{'name': 'Alice', 'age': 22, 'score': 90},
{'name': 'Lee', 'age': 26, 'score': 92},
{'name': 'Ben', 'age': 26, 'score': 85},
{'name': 'Tom', 'age': 33, 'score': 90},
{'name': 'Jill', 'age': 41, 'score': 72}
] print('根据名字排序：')
for i in sorted(list_people, key=lambda person: person['name']):
'''sorted()函数默认升序排列'''
print(i) print('\n根据得分降序排列：')
for i in sorted(list_people, key=itemgetter('score'), reverse=True):
'''参数reverse=True表示降序排列'''
print(i) print('\n根据名字和年龄多键排序：')
for i in sorted(list_people, key=itemgetter('name', 'age')):
print(i)
运行结果：
根据名字和年龄多键排序：
{'name': 'Alice', 'age': 22, 'score': 90}
{'name': 'Ben', 'age': 26, 'score': 85}
{'name': 'Jill', 'age': 41, 'score': 72}
{'name': 'Lee', 'age': 26, 'score': 92}
{'name': 'Mike', 'age': 22, 'score': 90}
{'name': 'Tom', 'age': 33, 'score': 90}