从被调用的函数访问Class属性？

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

    def get_name(self):
        return self.name

    def set_name(self, name):
        self.name = name

    def get_age(self):
        return self.age

    def set_age(self, age):
        if age > 0:
            self.age = age
        else:
            print("Age must be positive")

# 使用示例
person = Person("Alice", 30)
print(person.get_name())  # 输出: Alice
person.set_name("Bob")
print(person.get_name())  # 输出: Bob

# 错误示例
print(Person.name)  # 会报错，因为name是实例属性

# 正确示例
person = Person("Alice", 30)
print(person.name)  # 正确

class Person:
    def __init__(self, name, age):
        self.__name = name  # 私有属性
        self.__age = age    # 私有属性

    def get_name(self):
        return self.__name

    def set_name(self, name):
        self.__name = name

# 使用示例
person = Person("Alice", 30)
print(person.get_name())  # 输出: Alice
# person.__name  # 会报错，因为__name是私有属性

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

    def set_age(self, age):
        if age > 0:
            self.age = age
        else:
            print("Age must be positive")

# 使用示例
person = Person("Alice", 30)
person.set_age(-5)  # 输出: Age must be positive