在Python 3中，从父类中的子类获取属性

class Parent:
    def __init__(self):
        self.parent_attr = "Parent Attribute"

class Child(Parent):
    def __init__(self):
        super().__init__()  # 调用父类的__init__()方法
        self.child_attr = "Child Attribute"

child = Child()
print(child.parent_attr)  # 输出：Parent Attribute

class Parent:
    parent_attr = "Parent Attribute"

class Child(Parent):
    child_attr = "Child Attribute"

child = Child()
print(child.parent_attr)  # 输出：Parent Attribute

class Parent:
    parent_attr = "Parent Attribute"

class Child(Parent):
    child_attr = "Child Attribute"

child = Child()
print(getattr(child.__class__.__bases__[0], 'parent_attr'))  # 输出：Parent Attribute