如何按属性值对对象的字典排序？

如何解决如何按属性值对对象的字典排序？

for student in (sorted(student_Dict.values(), key=operator.attrgetter('age'))):
    print(student.name)

解决方法

我想以属性排序的方式遍历对象字典

import operator

class Student:
    def __init__(self,name,grade,age):
        self.name = name
        self.grade = grade
        self.age = age


studi1 = Student('john','A',15)
studi2 = Student('dave','B',10)
studi3 = Student('jane',12)

student_Dict = {}
student_Dict[studi1.name] = studi1
student_Dict[studi2.name] = studi2
student_Dict[studi3.name] = studi3

for key in (sorted(student_Dict,key=operator.attrgetter('age'))):
    print(key)

这给了我错误信息： AttributeError: 'str' object has no attribute 'age'