如何在Python中获取实例变量？

person = Person()
name = person.name  # 获取实例变量
print(name)

person = Person()
name = person.__dict__["name"]  # 获取实例变量
print(name)

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

person = Person("Alice")
name = person.name  # 获取实例变量
print(name)

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

    def __getitem__(self, key):
        return self.__dict__[key]

person = Person("Alice")
name = person["name"]  # 获取实例变量
print(name)