如何在Python中访问级联类变量

class OuterClass:
    outer_var = "I am an outer class variable"

    def __init__(self, outer_instance_var):
        self.outer_instance_var = outer_instance_var

    class InnerClass:
        def access_outer_class_variables(self, outer_instance):
            # 访问外部类的类变量
            print(OuterClass.outer_var)
            
            # 访问外部类的实例变量
            print(outer_instance.outer_instance_var)

# 创建外部类的实例
outer_instance = OuterClass("I am an instance variable of outer class")

# 创建内部类的实例并访问外部类的变量
inner_instance = OuterClass.InnerClass()
inner_instance.access_outer_class_variables(outer_instance)

I am an outer class variable
I am an instance variable of outer class