如何使用一个类引用另一个类中的属性

class Parent:
    def __init__(self):
        self.parent_attribute = "I am from Parent"

class Child(Parent):
    def __init__(self):
        super().__init__()
        self.child_attribute = "I am from Child"

child_instance = Child()
print(child_instance.parent_attribute)  # 输出: I am from Parent
print(child_instance.child_attribute)   # 输出: I am from Child

class Engine:
    def __init__(self):
        self.power = "High Power"

class Car:
    def __init__(self):
        self.engine = Engine()
        self.model = "Sedan"

car_instance = Car()
print(car_instance.engine.power)  # 输出: High Power
print(car_instance.model)         # 输出: Sedan

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

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

dept = Department("Engineering")
emp = Employee("John Doe", dept)
print(emp.department.name)  # 输出: Engineering