题解 | #修改属性1#

class Employee:
    def __init__(self, name, salary):
        self.name = name
        self.salary = salary

    def printclass(self):
        try:
            self.age
        except AttributeError:
            print("Error! No age")
        else:
            print(f"{self.name}'salary is {self.salary}, and his age is {self.age}")

# 创建 Employee 实例 e
e = Employee(input(), int(input()))

# 调用 printclass 方法输出信息
e.printclass()

# 根据输入的年龄为实例 e 添加属性 age，并再次调用 printclass 方法输出信息
age = int(input())
e.age = age
e.printclass()