python中怎么对Objects对象排序

class Employee:  def __init__(self,name,age,pay):    self.name = name    self.age = age    self.pay = pay  def __repr__(self):    return '({},{},{})'.format(self.name,self.age,self.pay)
#实例化三个对象emp_1 = Employee('TBag',25,50000)emp_2 = Employee('McUser',30,60000)emp_3 = Employee('Helly',42,80000)#存放到list列表中emps = [emp_1,emp_2,emp_3]#定义一个排序函数，返回值这里#可以自己指定根据什么属性排序def e_sort(emp):  return emp.name#使用sorted进行排序  sort_emps = sorted(emps,key=e_sort)print(sort_emps)

[(Helly,42,80000), (McUser,30,60000), (TBag,25,50000)]