python面向对象练习题

好的，以下是一些Python面向对象练习题：

1. 创建一个名为Person的类，包含属性name和age。创建一个对象并打印其属性。

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

person1 = Person("John", 25)
print(person1.name)
print(person1.age)

2. 创建一个名为Rectangle的类，包含属性width和height。定义一个方法用于计算矩形的面积。创建一个矩形对象并打印其面积。

class Rectangle:
    def __init__(self, width, height):
        self.width = width
        self.height = height
        
    def area(self):
        return self.width * self.height

rectangle1 = Rectangle(5, 10)
print(rectangle1.area())

3. 创建一个名为BankAccount的类，包含属性balance和owner。定义方法用于存款、取款和打印余额。创建一个银行账户对象并进行操作。

class BankAccount:
    def __init__(self, owner, balance=0):
        self.owner = owner
        self.balance = balance
        
    def deposit(self, amount):
        self.balance += amount
        print("Deposit successful.")
        
    def withdraw(self, amount):
        if amount <= self.balance:
            self.balance -= amount
            print("Withdrawal successful.")
        else:
            print("Insufficient funds.")
            
    def check_balance(self):
        print("Balance: ", self.balance)

account1 = BankAccount("John Doe", 1000)
account1.deposit(500)
account1.check_balance()
account1.withdraw(2000)
account1.check_balance()

4. 创建一个名为Vehicle的类，包含属性manufacturer和model。创建两个子类，Car和Motorcycle，并添加属性num_doors和num_wheels。创建一个车辆对象并打印其属性。

class Vehicle:
    def __init__(self, manufacturer, model):
        self.manufacturer = manufacturer
        self.model = model
        
class Car(Vehicle):
    def __init__(self, manufacturer, model, num_doors):
        super().__init__(manufacturer, model)
        self.num_doors = num_doors
        
class Motorcycle(Vehicle):
    def __init__(self, manufacturer, model, num_wheels):
        super().__init__(manufacturer, model)
        self.num_wheels = num_wheels
        
vehicle1 = Car("Toyota", "Corolla", 4)
print(vehicle1.manufacturer)
print(vehicle1.model)
print(vehicle1.num_doors)

vehicle2 = Motorcycle("Harley-Davidson", "Sportster", 2)
print(vehicle2.manufacturer)
print(vehicle2.model)
print(vehicle2.num_wheels)

这些练习题可以帮助你巩固Python面向对象编程的基础知识。祝你练习愉快！