{"id":1153905,"date":"2025-01-13T17:44:38","date_gmt":"2025-01-13T09:44:38","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1153905.html"},"modified":"2025-01-13T17:44:41","modified_gmt":"2025-01-13T09:44:41","slug":"python%e5%88%9b%e5%bb%ba%e7%b1%bb%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1153905.html","title":{"rendered":"python\u521b\u5efa\u7c7b\u5982\u4f55\u4f7f\u7528"},"content":{"rendered":"

\"python\u521b\u5efa\u7c7b\u5982\u4f55\u4f7f\u7528\"<\/p>\n

Python \u521b\u5efa\u7c7b\u65f6\uff0c\u4f7f\u7528 class \u5173\u952e\u5b57 \u5b9a\u4e49\u7c7b\u3001init \u65b9\u6cd5\u521d\u59cb\u5316\u7c7b\u3001self \u5173\u952e\u5b57\u5f15\u7528\u7c7b\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002<\/strong><\/p>\n<\/p>\n

\u5728 Python \u4e2d\uff0c\u7c7b\u662f\u521b\u5efa\u5bf9\u8c61\u7684\u84dd\u56fe\u6216\u6a21\u677f\u3002\u4f7f\u7528\u7c7b\u53ef\u4ee5\u5c01\u88c5\u6570\u636e\u548c\u529f\u80fd\uff0c\u4f7f\u4ee3\u7801\u66f4\u6a21\u5757\u5316\u548c\u53ef\u91cd\u7528\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u8be6\u7ec6\u7684\u6b65\u9aa4\u548c\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728 Python \u4e2d\u521b\u5efa\u548c\u4f7f\u7528\u7c7b\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u7c7b\u7684\u5b9a\u4e49\u4e0e\u521d\u59cb\u5316<\/h3>\n<\/p>\n

1. \u4f7f\u7528 class \u5173\u952e\u5b57\u5b9a\u4e49\u7c7b<\/h4>\n<\/p>\n

\u5728 Python \u4e2d\uff0c\u7c7b\u662f\u4f7f\u7528 class \u5173\u952e\u5b57\u5b9a\u4e49\u7684\u3002\u7c7b\u540d\u901a\u5e38\u4f7f\u7528 PascalCase \u547d\u540d\u6cd5\uff0c\u5373\u6bcf\u4e2a\u5355\u8bcd\u7684\u9996\u5b57\u6bcd\u5927\u5199\uff0c\u5176\u4ed6\u5b57\u6bcd\u5c0f\u5199\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n

class MyClass:<\/p>\n
    pass<\/p>\n
<\/code><\/pre>\n<\/p>\n
2. \u4f7f\u7528 init<\/strong> \u65b9\u6cd5\u521d\u59cb\u5316\u7c7b<\/h4>\n<\/p>\n
init<\/strong> \u65b9\u6cd5\u662f\u7c7b\u7684\u521d\u59cb\u5316\u65b9\u6cd5\uff0c\u5f53\u7c7b\u7684\u5b9e\u4f8b\u88ab\u521b\u5efa\u65f6\u81ea\u52a8\u8c03\u7528\u3002\u5b83\u901a\u5e38\u7528\u4e8e\u521d\u59cb\u5316\u5b9e\u4f8b\u7684\u5c5e\u6027\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
class MyClass:<\/p>\n
    def __init__(self, name, age):<\/p>\n
        self.name = name<\/p>\n
        self.age = age<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e8c\u3001\u7c7b\u7684\u5c5e\u6027\u4e0e\u65b9\u6cd5<\/h3>\n<\/p>\n
1. \u7c7b\u7684\u5c5e\u6027<\/h4>\n<\/p>\n
\u7c7b\u7684\u5c5e\u6027\u662f\u4e0e\u7c7b\u76f8\u5173\u7684\u53d8\u91cf\u3002\u5b83\u4eec\u53ef\u4ee5\u5728 init<\/strong> \u65b9\u6cd5\u4e2d\u5b9a\u4e49\uff0c\u4e5f\u53ef\u4ee5\u5728\u7c7b\u7684\u5176\u4ed6\u65b9\u6cd5\u4e2d\u52a8\u6001\u6dfb\u52a0\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
class MyClass:<\/p>\n
    def __init__(self, name, age):<\/p>\n
        self.name = name<\/p>\n
        self.age = age<\/p>\n
    def set_name(self, name):<\/p>\n
        self.name = name<\/p>\n
    def get_name(self):<\/p>\n
        return self.name<\/p>\n
<\/code><\/pre>\n<\/p>\n
2. \u7c7b\u7684\u65b9\u6cd5<\/h4>\n<\/p>\n
\u7c7b\u7684\u65b9\u6cd5\u662f\u5b9a\u4e49\u5728\u7c7b\u4e2d\u7684\u51fd\u6570\u3002\u5b83\u4eec\u901a\u5e38\u7528\u4e8e\u64cd\u4f5c\u7c7b\u7684\u5c5e\u6027\u6216\u6267\u884c\u4e0e\u7c7b\u76f8\u5173\u7684\u4efb\u52a1\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
class MyClass:<\/p>\n
    def __init__(self, name, age):<\/p>\n
        self.name = name<\/p>\n
        self.age = age<\/p>\n
    def display_info(self):<\/p>\n
        print(f"Name: {self.name}, Age: {self.age}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e09\u3001\u5b9e\u4f8b\u5316\u7c7b\u4e0e\u8c03\u7528\u65b9\u6cd5<\/h3>\n<\/p>\n
1. \u5b9e\u4f8b\u5316\u7c7b<\/h4>\n<\/p>\n
\u5b9e\u4f8b\u5316\u7c7b\u662f\u521b\u5efa\u7c7b\u7684\u5bf9\u8c61\u7684\u8fc7\u7a0b\u3002\u4f7f\u7528\u7c7b\u540d\u5e76\u4f20\u9012\u5fc5\u8981\u7684\u53c2\u6570\u6765\u521b\u5efa\u7c7b\u7684\u5b9e\u4f8b\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
person = MyClass("Alice", 30)<\/p>\n
<\/code><\/pre>\n<\/p>\n
2. \u8c03\u7528\u7c7b\u7684\u65b9\u6cd5<\/h4>\n<\/p>\n
\u901a\u8fc7\u5b9e\u4f8b\u8c03\u7528\u7c7b\u7684\u65b9\u6cd5\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
person.display_info()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u56db\u3001\u7c7b\u7684\u7ee7\u627f\u4e0e\u591a\u6001<\/h3>\n<\/p>\n
1. \u7c7b\u7684\u7ee7\u627f<\/h4>\n<\/p>\n
\u7c7b\u7684\u7ee7\u627f\u4f7f\u5f97\u4e00\u4e2a\u7c7b\u53ef\u4ee5\u7ee7\u627f\u53e6\u4e00\u4e2a\u7c7b\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\uff0c\u4ece\u800c\u5b9e\u73b0\u4ee3\u7801\u7684\u91cd\u7528\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
class ParentClass:<\/p>\n
    def __init__(self, name):<\/p>\n
        self.name = name<\/p>\n
    def display_name(self):<\/p>\n
        print(f"Name: {self.name}")<\/p>\n
class ChildClass(ParentClass):<\/p>\n
    def __init__(self, name, age):<\/p>\n
        super().__init__(name)<\/p>\n
        self.age = age<\/p>\n
    def display_info(self):<\/p>\n
        print(f"Name: {self.name}, Age: {self.age}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
2. \u7c7b\u7684\u591a\u6001<\/h4>\n<\/p>\n
\u591a\u6001\u662f\u6307\u540c\u4e00\u4e2a\u65b9\u6cd5\u5728\u4e0d\u540c\u7684\u7c7b\u4e2d\u6709\u4e0d\u540c\u7684\u5b9e\u73b0\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
class Animal:<\/p>\n
    def make_sound(self):<\/p>\n
        pass<\/p>\n
class Dog(Animal):<\/p>\n
    def make_sound(self):<\/p>\n
        print("Woof!")<\/p>\n
class Cat(Animal):<\/p>\n
    def make_sound(self):<\/p>\n
        print("Meow!")<\/p>\n
def animal_sound(animal):<\/p>\n
    animal.make_sound()<\/p>\n
dog = Dog()<\/p>\n
cat = Cat()<\/p>\n
animal_sound(dog)<\/p>\n
animal_sound(cat)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e94\u3001\u7c7b\u7684\u5c01\u88c5\u4e0e\u8bbf\u95ee\u63a7\u5236<\/h3>\n<\/p>\n
1. \u7c7b\u7684\u5c01\u88c5<\/h4>\n<\/p>\n
\u5c01\u88c5\u662f\u5c06\u6570\u636e\u548c\u65b9\u6cd5\u5305\u88c5\u5728\u7c7b\u4e2d\uff0c\u4f7f\u5176\u5bf9\u5916\u90e8\u9690\u85cf\u3002\u901a\u8fc7\u5c01\u88c5\uff0c\u53ef\u4ee5\u4fdd\u62a4\u7c7b\u7684\u5185\u90e8\u72b6\u6001\u548c\u884c\u4e3a\u4e0d\u88ab\u5916\u90e8\u5e72\u6270\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
class EncapsulatedClass:<\/p>\n
    def __init__(self, value):<\/p>\n
        self.__value = value<\/p>\n
    def get_value(self):<\/p>\n
        return self.__value<\/p>\n
    def set_value(self, value):<\/p>\n
        self.__value = value<\/p>\n
<\/code><\/pre>\n<\/p>\n
2. \u8bbf\u95ee\u63a7\u5236<\/h4>\n<\/p>\n
\u5728 Python \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u5728\u5c5e\u6027\u540d\u524d\u52a0\u4e0a\u5355\u4e0b\u5212\u7ebf\u6216\u53cc\u4e0b\u5212\u7ebf\u6765\u63a7\u5236\u5c5e\u6027\u7684\u8bbf\u95ee\u7ea7\u522b\u3002\u5355\u4e0b\u5212\u7ebf\u8868\u793a\u5c5e\u6027\u662f\u53d7\u4fdd\u62a4\u7684\uff0c\u53cc\u4e0b\u5212\u7ebf\u8868\u793a\u5c5e\u6027\u662f\u79c1\u6709\u7684\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
class AccessControl:<\/p>\n
    def __init__(self):<\/p>\n
        self._protected = "Protected"<\/p>\n
        self.__private = "Private"<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u516d\u3001\u7c7b\u7684\u9b54\u672f\u65b9\u6cd5\u4e0e\u8fd0\u7b97\u7b26\u91cd\u8f7d<\/h3>\n<\/p>\n
1. \u7c7b\u7684\u9b54\u672f\u65b9\u6cd5<\/h4>\n<\/p>\n
\u9b54\u672f\u65b9\u6cd5\u662f\u4ee5\u53cc\u4e0b\u5212\u7ebf\u5f00\u5934\u548c\u7ed3\u5c3e\u7684\u7279\u6b8a\u65b9\u6cd5\u3002\u5b83\u4eec\u7528\u4e8e\u5b9e\u73b0\u7279\u5b9a\u7684\u884c\u4e3a\uff0c\u4f8b\u5982\u5bf9\u8c61\u7684\u5b57\u7b26\u4e32\u8868\u793a\u3001\u7b97\u672f\u8fd0\u7b97\u7b49\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
class MagicMethods:<\/p>\n
    def __init__(self, value):<\/p>\n
        self.value = value<\/p>\n
    def __str__(self):<\/p>\n
        return f"Value: {self.value}"<\/p>\n
    def __add__(self, other):<\/p>\n
        return self.value + other.value<\/p>\n
<\/code><\/pre>\n<\/p>\n
2. \u8fd0\u7b97\u7b26\u91cd\u8f7d<\/h4>\n<\/p>\n
\u8fd0\u7b97\u7b26\u91cd\u8f7d\u662f\u901a\u8fc7\u5b9a\u4e49\u9b54\u672f\u65b9\u6cd5\u6765\u5b9e\u73b0\u81ea\u5b9a\u4e49\u7684\u8fd0\u7b97\u7b26\u884c\u4e3a\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
class Vector:<\/p>\n
    def __init__(self, x, y):<\/p>\n
        self.x = x<\/p>\n
        self.y = y<\/p>\n
    def __add__(self, other):<\/p>\n
        return Vector(self.x + other.x, self.y + other.y)<\/p>\n
    def __str__(self):<\/p>\n
        return f"Vector({self.x}, {self.y})"<\/p>\n
v1 = Vector(1, 2)<\/p>\n
v2 = Vector(3, 4)<\/p>\n
print(v1 + v2)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e03\u3001\u7c7b\u7684\u9759\u6001\u65b9\u6cd5\u4e0e\u7c7b\u65b9\u6cd5<\/h3>\n<\/p>\n
1. \u7c7b\u7684\u9759\u6001\u65b9\u6cd5<\/h4>\n<\/p>\n
\u9759\u6001\u65b9\u6cd5\u4f7f\u7528 @staticmethod \u88c5\u9970\u5668\u5b9a\u4e49\u3002\u5b83\u4eec\u4e0d\u9700\u8981\u8bbf\u95ee\u7c7b\u7684\u5b9e\u4f8b\u6216\u7c7b\u672c\u8eab\uff0c\u53ef\u4ee5\u76f4\u63a5\u901a\u8fc7\u7c7b\u540d\u8c03\u7528\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
class StaticMethods:<\/p>\n
    @staticmethod<\/p>\n
    def greet():<\/p>\n
        print("Hello, World!")<\/p>\n
StaticMethods.greet()<\/p>\n
<\/code><\/pre>\n<\/p>\n
2. \u7c7b\u65b9\u6cd5<\/h4>\n<\/p>\n
\u7c7b\u65b9\u6cd5\u4f7f\u7528 @classmethod \u88c5\u9970\u5668\u5b9a\u4e49\u3002\u5b83\u4eec\u63a5\u53d7\u7c7b\u672c\u8eab\u4f5c\u4e3a\u7b2c\u4e00\u4e2a\u53c2\u6570\uff0c\u901a\u5e38\u7528\u4e8e\u64cd\u4f5c\u7c7b\u53d8\u91cf\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
class ClassMethods:<\/p>\n
    count = 0<\/p>\n
    def __init__(self):<\/p>\n
        ClassMethods.count += 1<\/p>\n
    @classmethod<\/p>\n
    def get_count(cls):<\/p>\n
        return cls.count<\/p>\n
obj1 = ClassMethods()<\/p>\n
obj2 = ClassMethods()<\/p>\n
print(ClassMethods.get_count())<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u516b\u3001\u7c7b\u7684\u62bd\u8c61\u4e0e\u63a5\u53e3<\/h3>\n<\/p>\n
1. \u7c7b\u7684\u62bd\u8c61<\/h4>\n<\/p>\n
\u62bd\u8c61\u7c7b\u4e0d\u80fd\u88ab\u5b9e\u4f8b\u5316\uff0c\u53ea\u80fd\u88ab\u7ee7\u627f\u3002\u62bd\u8c61\u7c7b\u4f7f\u7528 abc \u6a21\u5757\u4e2d\u7684 ABC \u7c7b\u548c @abstractmethod \u88c5\u9970\u5668\u5b9a\u4e49\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
from abc import ABC, abstractmethod<\/p>\n
class AbstractClass(ABC):<\/p>\n
    @abstractmethod<\/p>\n
    def abstract_method(self):<\/p>\n
        pass<\/p>\n
class ConcreteClass(AbstractClass):<\/p>\n
    def abstract_method(self):<\/p>\n
        print("Implemented abstract method")<\/p>\n
obj = ConcreteClass()<\/p>\n
obj.abstract_method()<\/p>\n
<\/code><\/pre>\n<\/p>\n
2. \u7c7b\u7684\u63a5\u53e3<\/h4>\n<\/p>\n
\u63a5\u53e3\u662f\u5b9a\u4e49\u7c7b\u5e94\u5b9e\u73b0\u7684\u884c\u4e3a\u7684\u5951\u7ea6\u3002\u5728 Python \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u62bd\u8c61\u7c7b\u6765\u5b9a\u4e49\u63a5\u53e3\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
from abc import ABC, abstractmethod<\/p>\n
class Interface(ABC):<\/p>\n
    @abstractmethod<\/p>\n
    def method1(self):<\/p>\n
        pass<\/p>\n
    @abstractmethod<\/p>\n
    def method2(self):<\/p>\n
        pass<\/p>\n
class Implementation(Interface):<\/p>\n
    def method1(self):<\/p>\n
        print("Method1 implemented")<\/p>\n
    def method2(self):<\/p>\n
        print("Method2 implemented")<\/p>\n
obj = Implementation()<\/p>\n
obj.method1()<\/p>\n
obj.method2()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e5d\u3001\u7c7b\u7684\u7ec4\u5408\u4e0e\u805a\u5408<\/h3>\n<\/p>\n
1. \u7c7b\u7684\u7ec4\u5408<\/h4>\n<\/p>\n
\u7ec4\u5408\u662f\u6307\u4e00\u4e2a\u7c7b\u5305\u542b\u53e6\u4e00\u4e2a\u7c7b\u7684\u5b9e\u4f8b\u4f5c\u4e3a\u5176\u5c5e\u6027\uff0c\u4ee5\u5b9e\u73b0\u590d\u6742\u7684\u884c\u4e3a\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
class Engine:<\/p>\n
    def start(self):<\/p>\n
        print("Engine started")<\/p>\n
class Car:<\/p>\n
    def __init__(self):<\/p>\n
        self.engine = Engine()<\/p>\n
    def start(self):<\/p>\n
        self.engine.start()<\/p>\n
        print("Car started")<\/p>\n
car = Car()<\/p>\n
car.start()<\/p>\n
<\/code><\/pre>\n<\/p>\n
2. \u7c7b\u7684\u805a\u5408<\/h4>\n<\/p>\n
\u805a\u5408\u662f\u6307\u4e00\u4e2a\u7c7b\u5305\u542b\u53e6\u4e00\u4e2a\u7c7b\u7684\u5b9e\u4f8b\uff0c\u4f46\u4e24\u8005\u662f\u72ec\u7acb\u7684\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
class Wheel:<\/p>\n
    def roll(self):<\/p>\n
        print("Wheel rolling")<\/p>\n
class Car:<\/p>\n
    def __init__(self, wheels):<\/p>\n
        self.wheels = wheels<\/p>\n
    def move(self):<\/p>\n
        for wheel in self.wheels:<\/p>\n
            wheel.roll()<\/p>\n
        print("Car moving")<\/p>\n
wheel1 = Wheel()<\/p>\n
wheel2 = Wheel()<\/p>\n
wheels = [wheel1, wheel2]<\/p>\n
car = Car(wheels)<\/p>\n
car.move()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5341\u3001\u7c7b\u7684\u88c5\u9970\u5668\u4e0e\u5143\u7c7b<\/h3>\n<\/p>\n
1. \u7c7b\u7684\u88c5\u9970\u5668<\/h4>\n<\/p>\n
\u7c7b\u7684\u88c5\u9970\u5668\u662f\u7528\u4e8e\u4fee\u6539\u7c7b\u884c\u4e3a\u7684\u51fd\u6570\u3002\u5b83\u4eec\u53ef\u4ee5\u5728\u7c7b\u5b9a\u4e49\u65f6\u5e94\u7528\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
def class_decorator(cls):<\/p>\n
    cls.decorated = True<\/p>\n
    return cls<\/p>\n
@class_decorator<\/p>\n
class MyClass:<\/p>\n
    pass<\/p>\n
print(MyClass.decorated)<\/p>\n
<\/code><\/pre>\n<\/p>\n
2. \u7c7b\u7684\u5143\u7c7b<\/h4>\n<\/p>\n
\u5143\u7c7b\u662f\u7528\u4e8e\u521b\u5efa\u7c7b\u7684\u7c7b\u3002\u901a\u8fc7\u5b9a\u4e49\u5143\u7c7b\uff0c\u53ef\u4ee5\u5b9a\u5236\u7c7b\u7684\u521b\u5efa\u8fc7\u7a0b\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
class Meta(type):<\/p>\n
    def __new__(cls, name, bases, attrs):<\/p>\n
        attrs['created_by_meta'] = True<\/p>\n
        return super().__new__(cls, name, bases, attrs)<\/p>\n
class MyClass(metaclass=Meta):<\/p>\n
    pass<\/p>\n
print(MyClass.created_by_meta)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u4ee5\u4e0a\u8be6\u7ec6\u7684\u4ecb\u7ecd\uff0c\u76f8\u4fe1\u4f60\u5df2\u7ecf\u5bf9\u5982\u4f55\u5728 Python \u4e2d\u521b\u5efa\u548c\u4f7f\u7528\u7c7b\u6709\u4e86\u66f4\u6df1\u5165\u7684\u7406\u89e3\u3002\u5728\u5b9e\u9645\u7f16\u7a0b\u4e2d\uff0c\u7075\u6d3b\u8fd0\u7528\u8fd9\u4e9b\u77e5\u8bc6\uff0c\u53ef\u4ee5\u8ba9\u4f60\u7684\u4ee3\u7801\u66f4\u52a0\u6a21\u5757\u5316\u3001\u6613\u7ef4\u62a4\u548c\u53ef\u91cd\u7528\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u5b9a\u4e49\u4e00\u4e2a\u7c7b\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u5b9a\u4e49\u4e00\u4e2a\u7c7b\u4f7f\u7528class<\/code>\u5173\u952e\u5b57\uff0c\u540e\u9762\u7d27\u8ddf\u7c7b\u7684\u540d\u79f0\u3002\u7c7b\u4f53\u5185\u53ef\u4ee5\u5305\u542b\u5c5e\u6027\u548c\u65b9\u6cd5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u7c7b\u5b9a\u4e49\u793a\u4f8b\uff1a  <\/p>\n
class Dog:\n    def __init__(self, name, age):\n        self.name = name\n        self.age = age\n\n    def bark(self):\n        return f"{self.name} says woof!"\n<\/code><\/pre>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cDog<\/code>\u7c7b\u6709\u4e24\u4e2a\u5c5e\u6027\uff08name<\/code>\u548cage<\/code>\uff09\u4ee5\u53ca\u4e00\u4e2a\u65b9\u6cd5\uff08bark<\/code>\uff09\u3002  <\/p>\n
\u5982\u4f55\u521b\u5efa\u7c7b\u7684\u5b9e\u4f8b\u5e76\u8bbf\u95ee\u5176\u5c5e\u6027\u548c\u65b9\u6cd5\uff1f<\/strong>
\u521b\u5efa\u7c7b\u7684\u5b9e\u4f8b\u53ea\u9700\u8c03\u7528\u7c7b\u7684\u540d\u79f0\u5e76\u4f20\u5165\u5fc5\u8981\u7684\u53c2\u6570\u3002\u53ef\u4ee5\u901a\u8fc7\u70b9\uff08.<\/code>\uff09\u64cd\u4f5c\u7b26\u8bbf\u95ee\u5b9e\u4f8b\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a  <\/p>\n
my_dog = Dog("Buddy", 3)\nprint(my_dog.name)  # \u8f93\u51fa: Buddy\nprint(my_dog.bark())  # \u8f93\u51fa: Buddy says woof!\n<\/code><\/pre>\n
\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0cmy_dog<\/code>\u662fDog<\/code>\u7c7b\u7684\u4e00\u4e2a\u5b9e\u4f8b\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5b83\u6765\u8bbf\u95eename<\/code>\u5c5e\u6027\u548cbark<\/code>\u65b9\u6cd5\u3002  <\/p>\n
\u5982\u4f55\u5728\u7c7b\u4e2d\u4f7f\u7528\u7ee7\u627f\uff1f<\/strong>
\u7ee7\u627f\u5141\u8bb8\u65b0\u7c7b\u4ece\u5df2\u6709\u7c7b\u83b7\u53d6\u5c5e\u6027\u548c\u65b9\u6cd5\u3002\u901a\u8fc7\u5728\u7c7b\u5b9a\u4e49\u4e2d\u6307\u5b9a\u7236\u7c7b\uff0c\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u7ee7\u627f\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a  <\/p>\n
class Puppy(Dog):\n    def play(self):\n        return f"{self.name} is playing!"\n<\/code><\/pre>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cPuppy<\/code>\u7c7b\u7ee7\u627f\u4e86Dog<\/code>\u7c7b\u7684\u6240\u6709\u5c5e\u6027\u548c\u65b9\u6cd5\uff0c\u5e76\u589e\u52a0\u4e86\u4e00\u4e2a\u65b0\u7684play<\/code>\u65b9\u6cd5\u3002\u53ef\u4ee5\u521b\u5efaPuppy<\/code>\u7684\u5b9e\u4f8b\u5e76\u4f7f\u7528\u7ee7\u627f\u7684\u529f\u80fd\uff1a  <\/p>\n
my_puppy = Puppy("Max", 1)\nprint(my_puppy.bark())  # \u8f93\u51fa: Max says woof!\nprint(my_puppy.play())  # \u8f93\u51fa: Max is playing!\n<\/code><\/pre>\n
\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5728Python\u4e2d\u5b9e\u73b0\u7c7b\u7684\u590d\u7528\u548c\u6269\u5c55\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python \u521b\u5efa\u7c7b\u65f6\uff0c\u4f7f\u7528 class \u5173\u952e\u5b57 \u5b9a\u4e49\u7c7b\u3001init \u65b9\u6cd5\u521d\u59cb\u5316\u7c7b\u3001self \u5173\u952e\u5b57\u5f15\u7528\u7c7b\u7684\u5c5e\u6027 […]","protected":false},"author":3,"featured_media":1153909,"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\/1153905"}],"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=1153905"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1153905\/revisions"}],"predecessor-version":[{"id":1153911,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1153905\/revisions\/1153911"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1153909"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1153905"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1153905"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1153905"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}