{"id":1166881,"date":"2025-01-15T15:37:19","date_gmt":"2025-01-15T07:37:19","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1166881.html"},"modified":"2025-01-15T15:37:22","modified_gmt":"2025-01-15T07:37:22","slug":"python%e7%9a%84%e7%b1%bb%e5%90%8d%e5%a6%82%e4%bd%95%e8%8e%b7%e5%8f%96","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1166881.html","title":{"rendered":"python\u7684\u7c7b\u540d\u5982\u4f55\u83b7\u53d6"},"content":{"rendered":"

\"python\u7684\u7c7b\u540d\u5982\u4f55\u83b7\u53d6\"<\/p>\n

\u83b7\u53d6Python\u7c7b\u540d\u53ef\u4ee5\u901a\u8fc7__class__.__name__<\/code>\u5c5e\u6027\u3001type()<\/code>\u51fd\u6570\u3001__qualname__<\/code>\u5c5e\u6027<\/strong>\u7b49\u65b9\u6cd5\u6765\u5b9e\u73b0\u3002\u5176\u4e2d\uff0c__class__.__name__<\/code>\u662f\u6700\u5e38\u7528\u7684\u65b9\u6cd5<\/strong>\uff0c\u5b83\u4e0d\u4ec5\u7b80\u5355\u6613\u7528\uff0c\u800c\u4e14\u80fd\u76f4\u63a5\u8fd4\u56de\u7c7b\u7684\u540d\u79f0\uff0c\u9002\u7528\u4e8e\u5927\u591a\u6570\u573a\u666f\u3002\u4ee5\u4e0b\u662f\u8be6\u7ec6\u7684\u4ecb\u7ecd\u548c\u793a\u4f8b\u3002<\/p>\n<\/p>\n

\u4e00\u3001__class__.__name__<\/code>\u5c5e\u6027<\/h3>\n<\/p>\n

__class__.__name__<\/code>\u662f\u83b7\u53d6\u7c7b\u540d\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u4e4b\u4e00\uff0c\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u76f4\u63a5\u4ece\u5bf9\u8c61\u5b9e\u4f8b\u4e2d\u83b7\u53d6\u7c7b\u540d\u3002<\/p>\n<\/p>\n

class MyClass:<\/p>\n
    pass<\/p>\n
obj = MyClass()<\/p>\n
print(obj.__class__.__name__)  # \u8f93\u51fa: MyClass<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u5f0f\u7684\u4f18\u70b9\u662f\u7b80\u5355\u660e\u4e86\uff0c\u76f4\u63a5\u4ece\u5bf9\u8c61\u4e2d\u8bbf\u95ee\u7c7b\u7684\u540d\u79f0\uff0c\u9002\u7528\u4e8e\u9700\u8981\u5feb\u901f\u83b7\u53d6\u7c7b\u540d\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n
\u4e8c\u3001type()<\/code>\u51fd\u6570<\/h3>\n<\/p>\n
type()<\/code>\u51fd\u6570\u9664\u4e86\u53ef\u4ee5\u7528\u6765\u521b\u5efa\u65b0\u7c7b\u5916\uff0c\u8fd8\u53ef\u4ee5\u7528\u4e8e\u83b7\u53d6\u5bf9\u8c61\u7684\u7c7b\u578b\u3002\u901a\u8fc7\u8c03\u7528type()<\/code>\u51fd\u6570\u5e76\u8bbf\u95ee\u5176__name__<\/code>\u5c5e\u6027\uff0c\u4e5f\u53ef\u4ee5\u83b7\u53d6\u7c7b\u540d\u3002<\/p>\n<\/p>\n
class MyClass:<\/p>\n
    pass<\/p>\n
obj = MyClass()<\/p>\n
print(type(obj).__name__)  # \u8f93\u51fa: MyClass<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u5f0f\u4e0e__class__.__name__<\/code>\u7c7b\u4f3c\uff0c\u540c\u6837\u7b80\u5355\u6613\u7528\uff0c\u4e14\u80fd\u5728\u4e00\u4e9b\u7279\u6b8a\u573a\u666f\u4e0b\u63d0\u4f9b\u66f4\u4e30\u5bcc\u7684\u7c7b\u578b\u4fe1\u606f\u3002<\/p>\n<\/p>\n
\u4e09\u3001__qualname__<\/code>\u5c5e\u6027<\/h3>\n<\/p>\n
__qualname__<\/code>\u5c5e\u6027\u662f Python 3.3 \u5f15\u5165\u7684\u65b0\u5c5e\u6027\uff0c\u7528\u4e8e\u83b7\u53d6\u7c7b\u6216\u51fd\u6570\u7684\u5168\u9650\u5b9a\u540d\u79f0\uff0c\u7279\u522b\u9002\u7528\u4e8e\u5d4c\u5957\u7c7b\u6216\u51fd\u6570\u573a\u666f\u3002<\/p>\n<\/p>\n
class OuterClass:<\/p>\n
    class InnerClass:<\/p>\n
        pass<\/p>\n
inner_obj = OuterClass.InnerClass()<\/p>\n
print(inner_obj.__class__.__qualname__)  # \u8f93\u51fa: OuterClass.InnerClass<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u5f0f\u7684\u4f18\u52bf\u5728\u4e8e\u80fd\u591f\u63d0\u4f9b\u66f4\u8be6\u7ec6\u7684\u7c7b\u540d\u4fe1\u606f\uff0c\u5c24\u5176\u9002\u7528\u4e8e\u590d\u6742\u7684\u5d4c\u5957\u7ed3\u6784\u4e2d\uff0c\u9700\u8981\u77e5\u9053\u7c7b\u7684\u5b8c\u6574\u8def\u5f84\u65f6\u3002<\/p>\n<\/p>\n
\u56db\u3001\u6bd4\u8f83\u4e0e\u603b\u7ed3<\/h3>\n<\/p>\n
\u5728\u5b9e\u9645\u4f7f\u7528\u4e2d\uff0c\u9009\u62e9\u5408\u9002\u7684\u83b7\u53d6\u7c7b\u540d\u7684\u65b9\u6cd5\u53d6\u51b3\u4e8e\u5177\u4f53\u9700\u6c42\uff1a<\/p>\n<\/p>\n
    \n
  1. \u7b80\u5355\u573a\u666f<\/strong>\uff1a__class__.__name__<\/code>\u548ctype().__name__<\/code>\u662f\u6700\u5e38\u7528\u7684\u65b9\u6cd5\uff0c\u9002\u7528\u4e8e\u5927\u591a\u6570\u7b80\u5355\u573a\u666f\u3002<\/li>\n
  2. \u590d\u6742\u573a\u666f<\/strong>\uff1a__qualname__<\/code>\u9002\u7528\u4e8e\u9700\u8981\u83b7\u53d6\u5d4c\u5957\u7c7b\u6216\u51fd\u6570\u7684\u5168\u9650\u5b9a\u540d\u79f0\u7684\u573a\u666f\u3002<\/li>\n<\/ol>\n
    \u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\u7684\u5177\u4f53\u5e94\u7528\u548c\u66f4\u591a\u793a\u4f8b\u3002<\/p>\n<\/p>\n
    \u4e00\u3001__class__.__name__<\/code>\u5c5e\u6027\u7684\u8be6\u7ec6\u4ecb\u7ecd<\/h2>\n<\/p>\n
    __class__.__name__<\/code>\u5c5e\u6027\u662f\u83b7\u53d6\u7c7b\u540d\u6700\u76f4\u63a5\u7684\u65b9\u6cd5\u4e4b\u4e00\u3002\u901a\u8fc7\u5bf9\u8c61\u5b9e\u4f8b\u7684__class__<\/code>\u5c5e\u6027\u53ef\u4ee5\u8bbf\u95ee\u5230\u7c7b\u5bf9\u8c61\uff0c\u518d\u901a\u8fc7__name__<\/code>\u5c5e\u6027\u53ef\u4ee5\u83b7\u53d6\u7c7b\u540d\u3002\u4ee5\u4e0b\u662f\u51e0\u4e2a\u5e38\u89c1\u7684\u5e94\u7528\u573a\u666f\uff1a<\/p>\n<\/p>\n
    1.1\u3001\u57fa\u672c\u7528\u6cd5<\/h3>\n<\/p>\n
    \u76f4\u63a5\u4ece\u5bf9\u8c61\u5b9e\u4f8b\u83b7\u53d6\u7c7b\u540d\uff1a<\/p>\n<\/p>\n
    class Animal:<\/p>\n
        pass<\/p>\n
    cat = Animal()<\/p>\n
    print(cat.__class__.__name__)  # \u8f93\u51fa: Animal<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    1.2\u3001\u7ee7\u627f\u5173\u7cfb\u4e2d\u7684\u4f7f\u7528<\/h3>\n<\/p>\n
    \u5728\u7ee7\u627f\u5173\u7cfb\u4e2d\uff0c\u540c\u6837\u53ef\u4ee5\u4f7f\u7528__class__.__name__<\/code>\u83b7\u53d6\u5b50\u7c7b\u6216\u7236\u7c7b\u7684\u540d\u79f0\uff1a<\/p>\n<\/p>\n
    class Animal:<\/p>\n
        pass<\/p>\n
    class Dog(Animal):<\/p>\n
        pass<\/p>\n
    dog = Dog()<\/p>\n
    print(dog.__class__.__name__)  # \u8f93\u51fa: Dog<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    1.3\u3001\u52a8\u6001\u521b\u5efa\u7c7b\u540d<\/h3>\n<\/p>\n
    \u5728\u67d0\u4e9b\u52a8\u6001\u573a\u666f\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7__class__.__name__<\/code>\u52a8\u6001\u83b7\u53d6\u7c7b\u540d\u5e76\u8fdb\u884c\u4e00\u4e9b\u64cd\u4f5c\uff1a<\/p>\n<\/p>\n
    def create_instance(cls):<\/p>\n
        instance = cls()<\/p>\n
        print(f"Created an instance of {instance.__class__.__name__}")<\/p>\n
        return instance<\/p>\n
    class Bird:<\/p>\n
        pass<\/p>\n
    bird = create_instance(Bird)  # \u8f93\u51fa: Created an instance of Bird<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    1.4\u3001\u4e0e\u5176\u4ed6\u5c5e\u6027\u7684\u7ed3\u5408<\/h3>\n<\/p>\n
    \u7ed3\u5408\u5176\u4ed6\u5c5e\u6027\u53ef\u4ee5\u5b9e\u73b0\u66f4\u590d\u6742\u7684\u529f\u80fd\uff0c\u5982\u6253\u5370\u5bf9\u8c61\u7684\u8be6\u7ec6\u4fe1\u606f\uff1a<\/p>\n<\/p>\n
    class Car:<\/p>\n
        def __init__(self, make, model):<\/p>\n
            self.make = make<\/p>\n
            self.model = model<\/p>\n
        def __str__(self):<\/p>\n
            return f"{self.__class__.__name__}: {self.make} {self.model}"<\/p>\n
    car = Car("Toyota", "Corolla")<\/p>\n
    print(car)  # \u8f93\u51fa: Car: Toyota Corolla<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u4e8c\u3001type()<\/code>\u51fd\u6570\u7684\u8be6\u7ec6\u4ecb\u7ecd<\/h2>\n<\/p>\n
    type()<\/code>\u51fd\u6570\u4e0d\u4ec5\u53ef\u4ee5\u7528\u6765\u521b\u5efa\u65b0\u7c7b\uff0c\u8fd8\u53ef\u4ee5\u7528\u4e8e\u83b7\u53d6\u5bf9\u8c61\u7684\u7c7b\u578b\u4fe1\u606f\u3002\u901a\u8fc7type()<\/code>\u51fd\u6570\u53ef\u4ee5\u5f97\u5230\u7c7b\u5bf9\u8c61\uff0c\u518d\u901a\u8fc7__name__<\/code>\u5c5e\u6027\u83b7\u53d6\u7c7b\u540d\u3002<\/p>\n<\/p>\n
    2.1\u3001\u57fa\u672c\u7528\u6cd5<\/h3>\n<\/p>\n
    \u76f4\u63a5\u4f7f\u7528type()<\/code>\u51fd\u6570\u83b7\u53d6\u7c7b\u540d\uff1a<\/p>\n<\/p>\n
    class Plant:<\/p>\n
        pass<\/p>\n
    rose = Plant()<\/p>\n
    print(type(rose).__name__)  # \u8f93\u51fa: Plant<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    2.2\u3001\u5224\u65ad\u7c7b\u578b<\/h3>\n<\/p>\n
    \u5728\u9700\u8981\u5224\u65ad\u5bf9\u8c61\u7c7b\u578b\u65f6\uff0ctype()<\/code>\u51fd\u6570\u4e5f\u975e\u5e38\u6709\u7528\uff1a<\/p>\n<\/p>\n
    class Fruit:<\/p>\n
        pass<\/p>\n
    class Apple(Fruit):<\/p>\n
        pass<\/p>\n
    apple = Apple()<\/p>\n
    if type(apple) is Apple:<\/p>\n
        print("This is an apple.")  # \u8f93\u51fa: This is an apple.<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    2.3\u3001\u7ed3\u5408isinstance()<\/code>\u51fd\u6570<\/h3>\n<\/p>\n
    \u867d\u7136type()<\/code>\u51fd\u6570\u53ef\u4ee5\u76f4\u63a5\u5224\u65ad\u7c7b\u578b\uff0c\u4f46\u5728\u7ee7\u627f\u5173\u7cfb\u590d\u6742\u7684\u60c5\u51b5\u4e0b\uff0cisinstance()<\/code>\u51fd\u6570\u66f4\u4e3a\u7075\u6d3b\uff1a<\/p>\n<\/p>\n
    class Vehicle:<\/p>\n
        pass<\/p>\n
    class Truck(Vehicle):<\/p>\n
        pass<\/p>\n
    truck = Truck()<\/p>\n
    if isinstance(truck, Vehicle):<\/p>\n
        print(f"The object is of type: {type(truck).__name__}")  # \u8f93\u51fa: The object is of type: Truck<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    2.4\u3001\u52a8\u6001\u7c7b\u578b\u4fe1\u606f<\/h3>\n<\/p>\n
    \u5728\u52a8\u6001\u573a\u666f\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528type()<\/code>\u51fd\u6570\u83b7\u53d6\u7c7b\u578b\u4fe1\u606f\u5e76\u6267\u884c\u76f8\u5e94\u64cd\u4f5c\uff1a<\/p>\n<\/p>\n
    def describe_object(obj):<\/p>\n
        obj_type = type(obj).__name__<\/p>\n
        print(f"This is an instance of {obj_type}")<\/p>\n
    class Gadget:<\/p>\n
        pass<\/p>\n
    phone = Gadget()<\/p>\n
    describe_object(phone)  # \u8f93\u51fa: This is an instance of Gadget<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u4e09\u3001__qualname__<\/code>\u5c5e\u6027\u7684\u8be6\u7ec6\u4ecb\u7ecd<\/h2>\n<\/p>\n
    __qualname__<\/code>\u5c5e\u6027\u5728\u83b7\u53d6\u5d4c\u5957\u7c7b\u6216\u51fd\u6570\u7684\u5168\u9650\u5b9a\u540d\u79f0\u65f6\u975e\u5e38\u6709\u7528\u3002\u5b83\u80fd\u591f\u63d0\u4f9b\u7c7b\u6216\u51fd\u6570\u7684\u5b8c\u6574\u8def\u5f84\u4fe1\u606f\uff0c\u9002\u7528\u4e8e\u590d\u6742\u7ed3\u6784\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n
    3.1\u3001\u57fa\u672c\u7528\u6cd5<\/h3>\n<\/p>\n
    \u76f4\u63a5\u83b7\u53d6\u5d4c\u5957\u7c7b\u7684\u5168\u9650\u5b9a\u540d\u79f0\uff1a<\/p>\n<\/p>\n
    class Company:<\/p>\n
        class Department:<\/p>\n
            pass<\/p>\n
    department = Company.Department()<\/p>\n
    print(department.__class__.__qualname__)  # \u8f93\u51fa: Company.Department<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    3.2\u3001\u5d4c\u5957\u51fd\u6570\u7684\u4f7f\u7528<\/h3>\n<\/p>\n
    \u5728\u51fd\u6570\u5185\u90e8\u5b9a\u4e49\u7684\u7c7b\u6216\u51fd\u6570\uff0c\u540c\u6837\u53ef\u4ee5\u901a\u8fc7__qualname__<\/code>\u83b7\u53d6\u5168\u9650\u5b9a\u540d\u79f0\uff1a<\/p>\n<\/p>\n
    def outer_function():<\/p>\n
        class InnerClass:<\/p>\n
            pass<\/p>\n
        return InnerClass<\/p>\n
    Inner = outer_function()<\/p>\n
    print(Inner.__qualname__)  # \u8f93\u51fa: outer_function.<locals>.InnerClass<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    3.3\u3001\u590d\u6742\u5d4c\u5957\u7ed3\u6784<\/h3>\n<\/p>\n
    \u5bf9\u4e8e\u66f4\u590d\u6742\u7684\u5d4c\u5957\u7ed3\u6784\uff0c__qualname__<\/code>\u63d0\u4f9b\u4e86\u66f4\u8be6\u7ec6\u7684\u8def\u5f84\u4fe1\u606f\uff1a<\/p>\n<\/p>\n
    class School:<\/p>\n
        class ClassRoom:<\/p>\n
            class Student:<\/p>\n
                pass<\/p>\n
    student = School.ClassRoom.Student()<\/p>\n
    print(student.__class__.__qualname__)  # \u8f93\u51fa: School.ClassRoom.Student<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    3.4\u3001\u7ed3\u5408\u53cd\u5c04\u673a\u5236<\/h3>\n<\/p>\n
    __qualname__<\/code>\u8fd8\u53ef\u4ee5\u7ed3\u5408\u53cd\u5c04\u673a\u5236\uff0c\u52a8\u6001\u83b7\u53d6\u548c\u5904\u7406\u7c7b\u6216\u51fd\u6570\u7684\u5168\u9650\u5b9a\u540d\u79f0\uff1a<\/p>\n<\/p>\n
    class Library:<\/p>\n
        class Section:<\/p>\n
            def method(self):<\/p>\n
                pass<\/p>\n
    section = Library.Section()<\/p>\n
    method_qualname = section.method.__qualname__<\/p>\n
    print(method_qualname)  # \u8f93\u51fa: Library.Section.method<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u56db\u3001\u5e94\u7528\u573a\u666f\u4e0e\u5b9e\u8df5<\/h2>\n<\/p>\n
    4.1\u3001\u8c03\u8bd5\u4e0e\u65e5\u5fd7\u8bb0\u5f55<\/h3>\n<\/p>\n
    \u5728\u8c03\u8bd5\u548c\u65e5\u5fd7\u8bb0\u5f55\u4e2d\uff0c\u83b7\u53d6\u7c7b\u540d\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u5feb\u901f\u5b9a\u4f4d\u95ee\u9898\uff1a<\/p>\n<\/p>\n
    class Server:<\/p>\n
        def __init__(self, name):<\/p>\n
            self.name = name<\/p>\n
        def start(self):<\/p>\n
            print(f"{self.__class__.__name__} '{self.name}' is starting...")<\/p>\n
    server = Server("MAI<\/a>nServer")<\/p>\n
    server.start()  # \u8f93\u51fa: Server 'MainServer' is starting...<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    4.2\u3001\u52a8\u6001\u7c7b\u64cd\u4f5c<\/h3>\n<\/p>\n
    \u5728\u4e00\u4e9b\u52a8\u6001\u64cd\u4f5c\u4e2d\uff0c\u5982\u52a8\u6001\u521b\u5efa\u5b9e\u4f8b\u6216\u8c03\u7528\u65b9\u6cd5\u65f6\uff0c\u83b7\u53d6\u7c7b\u540d\u662f\u975e\u5e38\u6709\u7528\u7684\uff1a<\/p>\n<\/p>\n
    def create_instance_by_name(class_name):<\/p>\n
        if class_name == "Book":<\/p>\n
            return Book()<\/p>\n
        elif class_name == "Magazine":<\/p>\n
            return Magazine()<\/p>\n
    class Book:<\/p>\n
        def __init__(self):<\/p>\n
            self.title = "Unknown"<\/p>\n
    class Magazine:<\/p>\n
        def __init__(self):<\/p>\n
            self.issue = "Unknown"<\/p>\n
    item = create_instance_by_name("Book")<\/p>\n
    print(item.__class__.__name__)  # \u8f93\u51fa: Book<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    4.3\u3001\u6846\u67b6\u4e0e\u5e93\u7684\u8bbe\u8ba1<\/h3>\n<\/p>\n
    \u5728\u8bbe\u8ba1\u6846\u67b6\u6216\u5e93\u65f6\uff0c\u83b7\u53d6\u7c7b\u540d\u53ef\u4ee5\u7528\u4e8e\u81ea\u52a8\u751f\u6210\u6587\u6863\u3001\u52a8\u6001\u6ce8\u518c\u7c7b\u7b49\u64cd\u4f5c\uff1a<\/p>\n<\/p>\n
    class Plugin:<\/p>\n
        def __init__(self, name):<\/p>\n
            self.name = name<\/p>\n
    def register_plugin(plugin):<\/p>\n
        plugin_type = plugin.__class__.__name__<\/p>\n
        print(f"Registering {plugin_type} plugin: {plugin.name}")<\/p>\n
    plugin = Plugin("ExamplePlugin")<\/p>\n
    register_plugin(plugin)  # \u8f93\u51fa: Registering Plugin plugin: ExamplePlugin<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    4.4\u3001\u53cd\u5c04\u4e0e\u5143\u7f16\u7a0b<\/h3>\n<\/p>\n
    \u5728\u53cd\u5c04\u548c\u5143\u7f16\u7a0b\u4e2d\uff0c\u52a8\u6001\u83b7\u53d6\u7c7b\u540d\u662f\u5b9e\u73b0\u590d\u6742\u903b\u8f91\u7684\u57fa\u7840\uff1a<\/p>\n<\/p>\n
    class MetaClass(type):<\/p>\n
        def __new__(cls, name, bases, dct):<\/p>\n
            print(f"Creating class {name}")<\/p>\n
            return super().__new__(cls, name, bases, dct)<\/p>\n
    class DynamicClass(metaclass=MetaClass):<\/p>\n
        pass<\/p>\n
    \u8f93\u51fa: Creating class DynamicClass<\/strong><\/h2>\n
    dynamic_instance = DynamicClass()<\/p>\n
    print(dynamic_instance.__class__.__name__)  # \u8f93\u51fa: DynamicClass<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u4e94\u3001\u6df1\u5165\u7406\u89e3\u4e0e\u6269\u5c55<\/h2>\n<\/p>\n
    5.1\u3001\u7c7b\u7684\u5c5e\u6027\u4e0e\u65b9\u6cd5<\/h3>\n<\/p>\n
    \u9664\u4e86\u83b7\u53d6\u7c7b\u540d\uff0c\u7c7b\u7684\u5176\u4ed6\u5c5e\u6027\u548c\u65b9\u6cd5\u540c\u6837\u91cd\u8981\u3002\u4e86\u89e3\u8fd9\u4e9b\u5c5e\u6027\u548c\u65b9\u6cd5\uff0c\u53ef\u4ee5\u66f4\u597d\u5730\u7406\u89e3\u548c\u64cd\u4f5c\u7c7b\u548c\u5bf9\u8c61\uff1a<\/p>\n<\/p>\n
    class Sample:<\/p>\n
        def __init__(self, value):<\/p>\n
            self.value = value<\/p>\n
        def method(self):<\/p>\n
            return self.value<\/p>\n
    sample = Sample(10)<\/p>\n
    \u83b7\u53d6\u7c7b\u7684\u5c5e\u6027\u548c\u65b9\u6cd5<\/strong><\/h2>\n
    attributes = dir(sample)<\/p>\n
    print(attributes)  # \u8f93\u51fa: ['__class__', '__delattr__', '__dict__', '__dir__', '__doc__', ..., 'method', 'value']<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    5.2\u3001\u81ea\u5b9a\u4e49\u7c7b\u540d\u83b7\u53d6\u65b9\u6cd5<\/h3>\n<\/p>\n
    \u5728\u67d0\u4e9b\u7279\u6b8a\u573a\u666f\u4e2d\uff0c\u53ef\u4ee5\u81ea\u5b9a\u4e49\u83b7\u53d6\u7c7b\u540d\u7684\u65b9\u6cd5\uff0c\u4ee5\u6ee1\u8db3\u7279\u5b9a\u9700\u6c42\uff1a<\/p>\n<\/p>\n
    class CustomClass:<\/p>\n
        pass<\/p>\n
    def get_class_name(obj):<\/p>\n
        return obj.__class__.__name__<\/p>\n
    custom_obj = CustomClass()<\/p>\n
    print(get_class_name(custom_obj))  # \u8f93\u51fa: CustomClass<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    5.3\u3001\u7ed3\u5408\u5176\u4ed6\u8bed\u8a00\u7279\u6027<\/h3>\n<\/p>\n
    \u7ed3\u5408\u5176\u4ed6\u8bed\u8a00\u7279\u6027\uff0c\u5982\u88c5\u9970\u5668\u3001\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668\u7b49\uff0c\u53ef\u4ee5\u5b9e\u73b0\u66f4\u590d\u6742\u7684\u529f\u80fd\uff1a<\/p>\n<\/p>\n
    def log_class_name(func):<\/p>\n
        def wrapper(*args, kwargs):<\/p>\n
            class_name = args[0].__class__.__name__<\/p>\n
            print(f"Calling method of class: {class_name}")<\/p>\n
            return func(*args, kwargs)<\/p>\n
        return wrapper<\/p>\n
    class Example:<\/p>\n
        @log_class_name<\/p>\n
        def method(self):<\/p>\n
            print("Method executed")<\/p>\n
    example = Example()<\/p>\n
    example.method()<\/p>\n
    \u8f93\u51fa:<\/strong><\/h2>\n
    Calling method of class: Example<\/strong><\/h2>\n
    Method executed<\/strong><\/h2>\n
    <\/code><\/pre>\n<\/p>\n
    5.4\u3001\u4e0e\u7c7b\u578b\u6ce8\u89e3\u7ed3\u5408<\/h3>\n<\/p>\n
    \u7ed3\u5408\u7c7b\u578b\u6ce8\u89e3\uff0c\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u7ef4\u62a4\u6027\uff1a<\/p>\n<\/p>\n
    from typing import Type<\/p>\n
    def create_instance(cls: Type) -> object:<\/p>\n
        instance = cls()<\/p>\n
        print(f"Created instance of: {cls.__name__}")<\/p>\n
        return instance<\/p>\n
    class Document:<\/p>\n
        pass<\/p>\n
    doc = create_instance(Document)  # \u8f93\u51fa: Created instance of: Document<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    5.5\u3001\u52a8\u6001\u521b\u5efa\u7c7b<\/h3>\n<\/p>\n
    Python \u5141\u8bb8\u52a8\u6001\u521b\u5efa\u7c7b\uff0c\u7ed3\u5408\u7c7b\u540d\u7684\u83b7\u53d6\uff0c\u53ef\u4ee5\u5b9e\u73b0\u66f4\u7075\u6d3b\u7684\u529f\u80fd\uff1a<\/p>\n<\/p>\n
    def create_class(class_name):<\/p>\n
        return type(class_name, (object,), {})<\/p>\n
    DynamicClass = create_class("DynamicClass")<\/p>\n
    dynamic_instance = DynamicClass()<\/p>\n
    print(dynamic_instance.__class__.__name__)  # \u8f93\u51fa: DynamicClass<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u901a\u8fc7\u4ee5\u4e0a\u5404\u79cd\u65b9\u6cd5\u548c\u5b9e\u8df5\uff0c\u6211\u4eec\u53ef\u4ee5\u7075\u6d3b\u5730\u83b7\u53d6Python\u7c7b\u540d\uff0c\u5e76\u5728\u4e0d\u540c\u573a\u666f\u4e2d\u5e94\u7528\u8fd9\u4e9b\u6280\u672f\u4ee5\u5b9e\u73b0\u4e30\u5bcc\u7684\u529f\u80fd\u3002\u65e0\u8bba\u662f\u5728\u8c03\u8bd5\u3001\u52a8\u6001\u64cd\u4f5c\u3001\u6846\u67b6\u8bbe\u8ba1\u8fd8\u662f\u5143\u7f16\u7a0b\u4e2d\uff0c\u8fd9\u4e9b\u6280\u5de7\u90fd\u80fd\u63d0\u4f9b\u6781\u5927\u7684\u5e2e\u52a9\u3002\u4e86\u89e3\u5e76\u638c\u63e1\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u5c06\u4f7f\u4f60\u5728Python\u7f16\u7a0b\u4e2d\u66f4\u52a0\u5f97\u5fc3\u5e94\u624b\u3002<\/p>\n<\/p>\n
    \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
     \u5982\u4f55\u5728Python\u4e2d\u52a8\u6001\u83b7\u53d6\u4e00\u4e2a\u7c7b\u7684\u540d\u79f0\uff1f<\/strong>
    \u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7__class__.__name__<\/code>\u5c5e\u6027\u6765\u52a8\u6001\u83b7\u53d6\u4e00\u4e2a\u5b9e\u4f8b\u7684\u7c7b\u540d\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u6709\u4e00\u4e2a\u7c7bMyClass<\/code>\uff0c\u53ef\u4ee5\u5728\u5176\u5b9e\u4f8b\u4e2d\u4f7f\u7528instance.__class__.__name__<\/code>\u6765\u83b7\u53d6\u7c7b\u540d\u3002<\/p>\n
    \u5728\u521b\u5efa\u7c7b\u65f6\uff0c\u5982\u4f55\u81ea\u5b9a\u4e49\u7c7b\u540d\u7684\u663e\u793a\uff1f<\/strong>
    \u53ef\u4ee5\u901a\u8fc7\u91cd\u5199__str__<\/code>\u6216__repr__<\/code>\u65b9\u6cd5\u6765\u5b9a\u5236\u7c7b\u7684\u5b57\u7b26\u4e32\u8868\u793a\uff0c\u8fd9\u6837\u5728\u6253\u5370\u5bf9\u8c61\u65f6\u4f1a\u663e\u793a\u4f60\u60f3\u8981\u7684\u7c7b\u540d\u6216\u5176\u4ed6\u4fe1\u606f\u3002\u8fd9\u6837\u53ef\u4ee5\u589e\u5f3a\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n
    \u4f7f\u7528\u53cd\u5c04\u673a\u5236\uff0c\u5982\u4f55\u83b7\u53d6\u7c7b\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u540d\u79f0\uff1f<\/strong>
    \u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684dir()<\/code>\u51fd\u6570\u6765\u5217\u51fa\u7c7b\u7684\u6240\u6709\u5c5e\u6027\u548c\u65b9\u6cd5\u3002\u5728\u83b7\u53d6\u7c7b\u7684\u540d\u79f0\u540e\uff0c\u7ed3\u5408\u4f7f\u7528dir(ClassName)<\/code>\uff0c\u53ef\u4ee5\u83b7\u53d6\u5230\u8be5\u7c7b\u7684\u6240\u6709\u76f8\u5173\u4fe1\u606f\uff0c\u5305\u62ec\u5176\u5c5e\u6027\u548c\u65b9\u6cd5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u83b7\u53d6Python\u7c7b\u540d\u53ef\u4ee5\u901a\u8fc7__class__.__name__\u5c5e\u6027\u3001type()\u51fd\u6570\u3001__qualname_ […]","protected":false},"author":3,"featured_media":1166891,"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\/1166881"}],"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=1166881"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1166881\/revisions"}],"predecessor-version":[{"id":1166892,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1166881\/revisions\/1166892"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1166891"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1166881"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1166881"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1166881"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}