(Python)按命名元组中最后一个元素的递减顺序排序

from collections import namedtuple
import operator

Person = namedtuple('Person', ['name', 'age'])

person1 = Person('Alice', 25)
person2 = Person('Bob', 30)
person3 = Person('Charlie', 20)

people = [person1, person2, person3]

sorted_people = sorted(people, key=operator.attrgetter('age'), reverse=True)