{"id":1117594,"date":"2025-01-08T18:27:27","date_gmt":"2025-01-08T10:27:27","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1117594.html"},"modified":"2025-01-08T18:27:29","modified_gmt":"2025-01-08T10:27:29","slug":"python%e6%96%b0%e5%bb%ba%e4%b8%80%e4%b8%aa%e7%b1%bb%e5%a6%82%e4%bd%95%e6%96%b0%e5%bb%ba%e5%ae%9e%e4%be%8b","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1117594.html","title":{"rendered":"python\u65b0\u5efa\u4e00\u4e2a\u7c7b\u5982\u4f55\u65b0\u5efa\u5b9e\u4f8b"},"content":{"rendered":"

\"python\u65b0\u5efa\u4e00\u4e2a\u7c7b\u5982\u4f55\u65b0\u5efa\u5b9e\u4f8b\"<\/p>\n

\u5728Python\u4e2d\uff0c\u65b0\u5efa\u4e00\u4e2a\u7c7b\u5e76\u521b\u5efa\u5176\u5b9e\u4f8b\u7684\u8fc7\u7a0b\u975e\u5e38\u7b80\u5355\u548c\u76f4\u89c2\u3002\u65b0\u5efa\u7c7b\u4f7f\u7528class\u5173\u952e\u5b57\u3001\u65b0\u5efa\u5b9e\u4f8b\u4f7f\u7528\u7c7b\u540d\u5e76\u8c03\u7528<\/strong>\u3002\u4e0b\u9762\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u8fdb\u884c\u8fd9\u4e9b\u64cd\u4f5c\u3002<\/p>\n<\/p>\n

\u4f8b\u5b50\uff1a<\/strong><\/p>\n<\/p>\n

class Dog:<\/p>\n
    def __init__(self, name, age):<\/p>\n
        self.name = name<\/p>\n
        self.age = age<\/p>\n
    def sit(self):<\/p>\n
        print(f"{self.name} is now sitting.")<\/p>\n
    def roll_over(self):<\/p>\n
        print(f"{self.name} rolled over!")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3aDog\u7684\u7c7b\u3002\u8fd9\u4e2a\u7c7b\u6709\u4e24\u4e2a\u65b9\u6cd5\uff1a__init__<\/code>\uff08\u8fd9\u662f\u4e00\u4e2a\u7279\u6b8a\u65b9\u6cd5\uff0c\u7528\u4e8e\u521d\u59cb\u5316\u5bf9\u8c61\uff09\u548c\u4e24\u4e2a\u666e\u901a\u65b9\u6cd5sit<\/code>\u548croll_over<\/code>\u3002__init__<\/code>\u65b9\u6cd5\u5728\u7c7b\u5b9e\u4f8b\u5316\u65f6\u81ea\u52a8\u8c03\u7528\uff0cself<\/code>\u53c2\u6570\u662f\u5bf9\u7c7b\u5b9e\u4f8b\u7684\u5f15\u7528\uff0c\u5141\u8bb8\u6211\u4eec\u8bbf\u95ee\u7c7b\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
\u8981\u521b\u5efa\u8fd9\u4e2a\u7c7b\u7684\u5b9e\u4f8b\uff0c\u6211\u4eec\u53ef\u4ee5\u8fd9\u6837\u505a\uff1a<\/strong><\/p>\n<\/p>\n
my_dog = Dog('Willie', 6)<\/p>\n
print(f"My dog's name is {my_dog.name}.")<\/p>\n
print(f"My dog is {my_dog.age} years old.")<\/p>\n
my_dog.sit()<\/p>\n
my_dog.roll_over()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8f93\u51fa\uff1a<\/strong><\/p>\n<\/p>\n
My dog's name is Willie.<\/p>\n
My dog is 6 years old.<\/p>\n
Willie is now sitting.<\/p>\n
Willie rolled over!<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e00\u3001\u7c7b\u7684\u5b9a\u4e49\u548c\u5b9e\u4f8b\u5316<\/h3>\n<\/p>\n
\u5728Python\u4e2d\uff0c\u7c7b\u662f\u4f7f\u7528class<\/code>\u5173\u952e\u5b57\u5b9a\u4e49\u7684\u3002\u7c7b\u5b9a\u4e49\u4e86\u5bf9\u8c61\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002\u5c5e\u6027\u662f\u5bf9\u8c61\u7684\u6570\u636e\uff0c\u65b9\u6cd5\u662f\u5bf9\u8c61\u7684\u884c\u4e3a\u3002<\/p>\n<\/p>\n
class Dog:<\/p>\n
    def __init__(self, name, age):<\/p>\n
        self.name = name<\/p>\n
        self.age = age<\/p>\n
    def sit(self):<\/p>\n
        print(f"{self.name} is now sitting.")<\/p>\n
    def roll_over(self):<\/p>\n
        print(f"{self.name} rolled over!")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u7c7b\u4e2d\uff0c__init__<\/code>\u65b9\u6cd5\u662f\u4e00\u4e2a\u7279\u6b8a\u7684\u65b9\u6cd5\uff0c\u6bcf\u5f53\u521b\u5efa\u7c7b\u7684\u65b0\u5b9e\u4f8b\u65f6\uff0cPython\u90fd\u4f1a\u81ea\u52a8\u8c03\u7528\u5b83\u3002\u8fd9\u4e2a\u65b9\u6cd5\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u662fself<\/code>\uff0c\u5b83\u662f\u5bf9\u7c7b\u5b9e\u4f8b\u7684\u5f15\u7528\u3002\u6bcf\u5f53\u6211\u4eec\u4f7f\u7528self<\/code>\u65f6\uff0c\u6211\u4eec\u662f\u5728\u8bbf\u95ee\u7c7b\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u521b\u5efa\u7c7b\u7684\u5b9e\u4f8b<\/h3>\n<\/p>\n
\u8981\u521b\u5efa\u7c7b\u7684\u5b9e\u4f8b\uff0c\u6211\u4eec\u53ea\u9700\u8c03\u7528\u7c7b\u540d\uff0c\u5e76\u4f20\u9012\u6240\u9700\u7684\u53c2\u6570\uff1a<\/p>\n<\/p>\n
my_dog = Dog('Willie', 6)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u4e2a\u8bed\u53e5\u521b\u5efa\u4e86\u4e00\u4e2a\u540d\u4e3amy_dog<\/code>\u7684Dog\u7c7b\u5b9e\u4f8b\uff0c\u5e76\u5c06name<\/code>\u5c5e\u6027\u8bbe\u7f6e\u4e3a'Willie'\uff0c\u5c06age<\/code>\u5c5e\u6027\u8bbe\u7f6e\u4e3a6\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u8bbf\u95ee\u5c5e\u6027\u548c\u8c03\u7528\u65b9\u6cd5<\/h3>\n<\/p>\n
\u4e00\u65e6\u6211\u4eec\u521b\u5efa\u4e86\u7c7b\u7684\u5b9e\u4f8b\uff0c\u6211\u4eec\u53ef\u4ee5\u8bbf\u95ee\u5b83\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\uff1a<\/p>\n<\/p>\n
print(f"My dog's name is {my_dog.name}.")<\/p>\n
print(f"My dog is {my_dog.age} years old.")<\/p>\n
my_dog.sit()<\/p>\n
my_dog.roll_over()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u4e9b\u8bed\u53e5\u6f14\u793a\u4e86\u5982\u4f55\u8bbf\u95ee\u5b9e\u4f8b\u7684\u5c5e\u6027\u5e76\u8c03\u7528\u5b83\u7684\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
\u56db\u3001\u5b9e\u4f8b\u5316\u591a\u4e2a\u5bf9\u8c61<\/h3>\n<\/p>\n
\u6211\u4eec\u53ef\u4ee5\u521b\u5efa\u591a\u4e2a\u7c7b\u7684\u5b9e\u4f8b\uff0c\u6bcf\u4e2a\u5b9e\u4f8b\u90fd\u662f\u72ec\u7acb\u7684\uff1a<\/p>\n<\/p>\n
my_dog = Dog('Willie', 6)<\/p>\n
your_dog = Dog('Lucy', 3)<\/p>\n
print(f"My dog's name is {my_dog.name}.")<\/p>\n
print(f"My dog is {my_dog.age} years old.")<\/p>\n
my_dog.sit()<\/p>\n
print(f"\\nYour dog's name is {your_dog.name}.")<\/p>\n
print(f"Your dog is {your_dog.age} years old.")<\/p>\n
your_dog.sit()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e94\u3001\u7c7b\u7684\u7ee7\u627f<\/h3>\n<\/p>\n
\u7c7b\u7684\u7ee7\u627f\u5141\u8bb8\u6211\u4eec\u5b9a\u4e49\u4e00\u4e2a\u7c7b\uff0c\u5b83\u7ee7\u627f\u53e6\u4e00\u4e2a\u7c7b\u7684\u6240\u6709\u65b9\u6cd5\u548c\u5c5e\u6027\u3002\u8fd9\u6837\uff0c\u6211\u4eec\u53ef\u4ee5\u91cd\u7528\u73b0\u6709\u7684\u7c7b\uff0c\u800c\u65e0\u9700\u4ece\u5934\u5f00\u59cb\u7f16\u5199\u6240\u6709\u4ee3\u7801\u3002<\/p>\n<\/p>\n
class Car:<\/p>\n
    def __init__(self, make, model, year):<\/p>\n
        self.make = make<\/p>\n
        self.model = model<\/p>\n
        self.year = year<\/p>\n
    def get_descriptive_name(self):<\/p>\n
        long_name = f"{self.year} {self.make} {self.model}"<\/p>\n
        return long_name.title()<\/p>\n
class ElectricCar(Car):<\/p>\n
    def __init__(self, make, model, year):<\/p>\n
        super().__init__(make, model, year)<\/p>\n
        self.battery_size = 75<\/p>\n
    def describe_battery(self):<\/p>\n
        print(f"This car has a {self.battery_size}-kWh battery.")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3aCar<\/code>\u7684\u7c7b\u3002\u7136\u540e\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u53e6\u4e00\u4e2a\u7c7bElectricCar<\/code>\uff0c\u5b83\u7ee7\u627f\u4e86Car<\/code>\u7c7b\u3002ElectricCar<\/code>\u7c7b\u8c03\u7528super()<\/code>\u6765\u7ee7\u627fCar<\/code>\u7c7b\u7684\u6240\u6709\u5c5e\u6027\u548c\u65b9\u6cd5\uff0c\u5e76\u6dfb\u52a0\u4e86\u4e00\u4e2a\u65b0\u7684\u5c5e\u6027battery_size<\/code>\u548c\u4e00\u4e2a\u65b0\u7684\u65b9\u6cd5describe_battery<\/code>\u3002<\/p>\n<\/p>\n
\u516d\u3001\u7c7b\u7684\u591a\u6001\u6027<\/h3>\n<\/p>\n
\u591a\u6001\u6027\u662f\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u4e2d\u7684\u4e00\u4e2a\u91cd\u8981\u6982\u5ff5\uff0c\u5b83\u5141\u8bb8\u6211\u4eec\u5b9a\u4e49\u901a\u7528\u63a5\u53e3\u6765\u8bbf\u95ee\u4e0d\u540c\u7c7b\u578b\u7684\u5bf9\u8c61\u3002\u8fd9\u6837\uff0c\u6211\u4eec\u53ef\u4ee5\u7f16\u5199\u66f4\u52a0\u901a\u7528\u548c\u7075\u6d3b\u7684\u4ee3\u7801\u3002<\/p>\n<\/p>\n
class Animal:<\/p>\n
    def speak(self):<\/p>\n
        pass<\/p>\n
class Dog(Animal):<\/p>\n
    def speak(self):<\/p>\n
        return "Woof!"<\/p>\n
class Cat(Animal):<\/p>\n
    def speak(self):<\/p>\n
        return "Meow!"<\/p>\n
def make_animal_speak(animal):<\/p>\n
    print(animal.speak())<\/p>\n
dog = Dog()<\/p>\n
cat = Cat()<\/p>\n
make_animal_speak(dog)  # \u8f93\u51fa\uff1aWoof!<\/p>\n
make_animal_speak(cat)  # \u8f93\u51fa\uff1aMeow!<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3aAnimal<\/code>\u7684\u57fa\u7c7b\uff0c\u5e76\u5728\u5176\u4e2d\u5b9a\u4e49\u4e86\u4e00\u4e2a\u62bd\u8c61\u65b9\u6cd5speak<\/code>\u3002\u7136\u540e\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e24\u4e2a\u5b50\u7c7bDog<\/code>\u548cCat<\/code>\uff0c\u5b83\u4eec\u5206\u522b\u5b9e\u73b0\u4e86speak<\/code>\u65b9\u6cd5\u3002\u6700\u540e\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u51fd\u6570make_animal_speak<\/code>\uff0c\u5b83\u63a5\u53d7\u4e00\u4e2aAnimal<\/code>\u7c7b\u578b\u7684\u53c2\u6570\uff0c\u5e76\u8c03\u7528\u5b83\u7684speak<\/code>\u65b9\u6cd5\u3002\u8fd9\u6837\uff0c\u5373\u4f7f\u6211\u4eec\u4f20\u9012\u4e0d\u540c\u7c7b\u578b\u7684\u52a8\u7269\u5b9e\u4f8b\uff0c\u51fd\u6570\u4e5f\u80fd\u6b63\u786e\u5730\u8c03\u7528\u76f8\u5e94\u7684speak<\/code>\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
\u4e03\u3001\u7c7b\u7684\u5c01\u88c5<\/h3>\n<\/p>\n
\u5c01\u88c5\u662f\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u4e2d\u7684\u53e6\u4e00\u4e2a\u91cd\u8981\u6982\u5ff5\uff0c\u5b83\u5141\u8bb8\u6211\u4eec\u5c06\u5bf9\u8c61\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u9690\u85cf\u8d77\u6765\uff0c\u4ee5\u9632\u6b62\u5916\u90e8\u4ee3\u7801\u76f4\u63a5\u8bbf\u95ee\u548c\u4fee\u6539\u5b83\u4eec\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u53cc\u4e0b\u5212\u7ebf__<\/code>\u6765\u5b9a\u4e49\u79c1\u6709\u5c5e\u6027\u548c\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
class BankAccount:<\/p>\n
    def __init__(self, owner, balance=0):<\/p>\n
        self.__owner = owner<\/p>\n
        self.__balance = balance<\/p>\n
    def deposit(self, amount):<\/p>\n
        if amount > 0:<\/p>\n
            self.__balance += amount<\/p>\n
            print(f"Deposited {amount}. New balance is {self.__balance}.")<\/p>\n
        else:<\/p>\n
            print("Deposit amount must be positive.")<\/p>\n
    def withdraw(self, amount):<\/p>\n
        if 0 < amount <= self.__balance:<\/p>\n
            self.__balance -= amount<\/p>\n
            print(f"Withdrew {amount}. New balance is {self.__balance}.")<\/p>\n
        else:<\/p>\n
            print("Invalid withdraw amount.")<\/p>\n
    def get_balance(self):<\/p>\n
        return self.__balance<\/p>\n
    def get_owner(self):<\/p>\n
        return self.__owner<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3aBankAccount<\/code>\u7684\u7c7b\uff0c\u5e76\u5c06owner<\/code>\u548cbalance<\/code>\u5c5e\u6027\u5b9a\u4e49\u4e3a\u79c1\u6709\u5c5e\u6027\u3002\u8fd9\u6837\uff0c\u5916\u90e8\u4ee3\u7801\u5c31\u65e0\u6cd5\u76f4\u63a5\u8bbf\u95ee\u548c\u4fee\u6539\u5b83\u4eec\u3002\u6211\u4eec\u8fd8\u5b9a\u4e49\u4e86\u4e00\u4e9b\u65b9\u6cd5\u6765\u5b58\u53d6\u6b3e\u548c\u67e5\u8be2\u4f59\u989d\u3002<\/p>\n<\/p>\n
\u516b\u3001\u7c7b\u7684\u7ec4\u5408<\/h3>\n<\/p>\n
\u7ec4\u5408\u662f\u5c06\u5bf9\u8c61\u4f5c\u4e3a\u7c7b\u7684\u5c5e\u6027\u6765\u4f7f\u7528\u7684\u4e00\u79cd\u6280\u672f\u3002\u4e0e\u7ee7\u627f\u4e0d\u540c\uff0c\u7ec4\u5408\u5141\u8bb8\u6211\u4eec\u5728\u8fd0\u884c\u65f6\u52a8\u6001\u5730\u6539\u53d8\u5bf9\u8c61\u7684\u884c\u4e3a\u3002<\/p>\n<\/p>\n
class Battery:<\/p>\n
    def __init__(self, size=75):<\/p>\n
        self.size = size<\/p>\n
    def describe(self):<\/p>\n
        print(f"This car has a {self.size}-kWh battery.")<\/p>\n
class ElectricCar:<\/p>\n
    def __init__(self, make, model, year):<\/p>\n
        self.make = make<\/p>\n
        self.model = model<\/p>\n
        self.year = year<\/p>\n
        self.battery = Battery()<\/p>\n
    def get_descriptive_name(self):<\/p>\n
        long_name = f"{self.year} {self.make} {self.model}"<\/p>\n
        return long_name.title()<\/p>\n
    def describe_battery(self):<\/p>\n
        self.battery.describe()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3aBattery<\/code>\u7684\u7c7b\uff0c\u5e76\u5c06\u5176\u4f5c\u4e3aElectricCar<\/code>\u7c7b\u7684\u5c5e\u6027\u3002\u8fd9\u79cd\u7ec4\u5408\u5173\u7cfb\u4f7f\u5f97\u6211\u4eec\u53ef\u4ee5\u5728\u4e0d\u6539\u53d8ElectricCar<\/code>\u7c7b\u7684\u60c5\u51b5\u4e0b\uff0c\u52a8\u6001\u5730\u6539\u53d8Battery<\/code>\u5bf9\u8c61\u7684\u884c\u4e3a\u3002<\/p>\n<\/p>\n
\u901a\u8fc7\u4ee5\u4e0a\u51e0\u4e2a\u65b9\u9762\u7684\u4ecb\u7ecd\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u51faPython\u7684\u7c7b\u548c\u5bf9\u8c61\u673a\u5236\u662f\u975e\u5e38\u7075\u6d3b\u548c\u5f3a\u5927\u7684\u3002\u7406\u89e3\u8fd9\u4e9b\u6982\u5ff5\u548c\u6280\u672f\uff0c\u4e0d\u4ec5\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u7f16\u5199\u51fa\u66f4\u52a0\u9ad8\u6548\u548c\u4f18\u96c5\u7684\u4ee3\u7801\uff0c\u8fd8\u80fd\u66f4\u597d\u5730\u7ec4\u7ec7\u548c\u7ba1\u7406\u6211\u4eec\u7684\u4ee3\u7801\u7ed3\u6784\u3002<\/p>\n<\/p>\n
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\u8981\u521b\u5efa\u4e00\u4e2a\u7c7b\u7684\u5b9e\u4f8b\uff0c\u9996\u5148\u9700\u8981\u5b9a\u4e49\u7c7b\uff0c\u5e76\u5728\u5b9a\u4e49\u540e\u4f7f\u7528\u7c7b\u540d\u8c03\u7528\u6784\u9020\u51fd\u6570\u3002\u6784\u9020\u51fd\u6570\u901a\u5e38\u662f__init__<\/code>\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5728\u521b\u5efa\u5b9e\u4f8b\u65f6\u4f20\u9012\u6240\u9700\u7684\u53c2\u6570\u3002\u4f8b\u5982\uff1a  <\/p>\n
class MyClass:\n    def __init__(self, name):\n        self.name = name\n\ninstance = MyClass("example")\n<\/code><\/pre>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cMyClass<\/code>\u662f\u7c7b\u540d\uff0cinstance<\/code>\u662f\u65b0\u5efa\u7684\u5b9e\u4f8b\uff0c\u4f20\u5165\u53c2\u6570\u201cexample\u201d\u88ab\u8d4b\u503c\u7ed9self.name<\/code>\u3002<\/p>\n
\u5728\u521b\u5efa\u5b9e\u4f8b\u65f6\u53ef\u4ee5\u4f20\u5165\u54ea\u4e9b\u53c2\u6570\uff1f<\/strong>
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class Person:\n    def __init__(self, name, age):\n        self.name = name\n        self.age = age\n\nperson_instance = Person("Alice", 30)\n<\/code><\/pre>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cPerson<\/code>\u7c7b\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570\uff1aname<\/code>\u548cage<\/code>\u3002<\/p>\n
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\u5982\u679c\u5728\u7c7b\u7684__init__<\/code>\u65b9\u6cd5\u4e2d\u5b9a\u4e49\u4e86\u9ed8\u8ba4\u53c2\u6570\uff0c\u90a3\u4e48\u5728\u521b\u5efa\u5b9e\u4f8b\u65f6\u53ef\u4ee5\u9009\u62e9\u6027\u5730\u7701\u7565\u8fd9\u4e9b\u53c2\u6570\u3002\u9ed8\u8ba4\u53c2\u6570\u7684\u503c\u4f1a\u5728\u6ca1\u6709\u63d0\u4f9b\u65f6\u88ab\u4f7f\u7528\u3002\u4f8b\u5982\uff1a  <\/p>\n
class Car:\n    def __init__(self, make, model="Unknown"):\n        self.make = make\n        self.model = model\n\ncar_instance = Car("Toyota")\n<\/code><\/pre>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0cmodel<\/code>\u53c2\u6570\u662f\u53ef\u9009\u7684\uff0c\u82e5\u4e0d\u63d0\u4f9b\uff0c\u5219\u9ed8\u8ba4\u4e3a\u201cUnknown\u201d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u65b0\u5efa\u4e00\u4e2a\u7c7b\u5e76\u521b\u5efa\u5176\u5b9e\u4f8b\u7684\u8fc7\u7a0b\u975e\u5e38\u7b80\u5355\u548c\u76f4\u89c2\u3002\u65b0\u5efa\u7c7b\u4f7f\u7528class\u5173\u952e\u5b57\u3001\u65b0\u5efa\u5b9e\u4f8b\u4f7f\u7528\u7c7b\u540d\u5e76\u8c03 […]","protected":false},"author":3,"featured_media":1117596,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1117594"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1117594"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1117594\/revisions"}],"predecessor-version":[{"id":1117597,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1117594\/revisions\/1117597"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1117596"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1117594"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1117594"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1117594"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}