{"id":1088645,"date":"2025-01-08T13:46:11","date_gmt":"2025-01-08T05:46:11","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1088645.html"},"modified":"2025-01-08T13:46:13","modified_gmt":"2025-01-08T05:46:13","slug":"python%e7%b1%bb%e4%b8%ad%e6%96%b9%e6%b3%95%e5%a6%82%e4%bd%95%e8%b0%83%e7%94%a8%e6%96%b9%e6%b3%95%e8%b0%83%e7%94%a8-2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1088645.html","title":{"rendered":"python\u7c7b\u4e2d\u65b9\u6cd5\u5982\u4f55\u8c03\u7528\u65b9\u6cd5\u8c03\u7528"},"content":{"rendered":"

\"python\u7c7b\u4e2d\u65b9\u6cd5\u5982\u4f55\u8c03\u7528\u65b9\u6cd5\u8c03\u7528\"<\/p>\n

\u5728Python\u7c7b\u4e2d\uff0c\u65b9\u6cd5\u8c03\u7528\u65b9\u6cd5\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u7f16\u7a0b\u573a\u666f\u3002\u65b9\u6cd5\u8c03\u7528\u65b9\u6cd5\u7684\u65b9\u5f0f\u5305\u62ec\uff1a\u76f4\u63a5\u8c03\u7528\u3001\u901a\u8fc7self\u5173\u952e\u5b57\u8c03\u7528\u3001\u901a\u8fc7\u7c7b\u540d\u8c03\u7528\u3001\u901a\u8fc7super()\u8c03\u7528<\/strong>\uff0c\u5176\u4e2d\u6700\u5e38\u89c1\u548c\u6700\u63a8\u8350\u7684\u65b9\u5f0f\u662f\u901a\u8fc7self\u5173\u952e\u5b57\u8c03\u7528\u3002\u8fd9\u79cd\u8c03\u7528\u65b9\u5f0f\u4e0d\u4ec5\u76f4\u89c2\uff0c\u800c\u4e14\u4fbf\u4e8e\u4ee3\u7801\u7684\u7ef4\u62a4\u548c\u6269\u5c55\u3002\u76f4\u63a5\u8c03\u7528<\/strong>\u610f\u5473\u7740\u5728\u540c\u4e00\u4e2a\u65b9\u6cd5\u4e2d\u76f4\u63a5\u8c03\u7528\u53e6\u4e00\u4e2a\u65b9\u6cd5\uff0c\u800c\u4e0d\u9700\u8981\u4efb\u4f55\u524d\u7f00\u3002\u8fd9\u79cd\u65b9\u5f0f\u9002\u7528\u4e8e\u9759\u6001\u65b9\u6cd5\u548c\u7c7b\u65b9\u6cd5\u3002\u5728\u7c7b\u65b9\u6cd5\u4e2d\uff0c\u6211\u4eec\u901a\u5e38\u4f7f\u7528\u7c7b\u540d\u6765\u8c03\u7528\u65b9\u6cd5\u3002\u5728\u7ee7\u627f\u548c\u591a\u6001\u7684\u573a\u666f\u4e0b\uff0csuper()\u8c03\u7528<\/strong>\u662f\u4e00\u4e2a\u5f3a\u6709\u529b\u7684\u5de5\u5177\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u76f4\u63a5\u8c03\u7528<\/h3>\n<\/p>\n

\u76f4\u63a5\u8c03\u7528\u662f\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u8c03\u7528\u65b9\u5f0f\u3002\u4f60\u53ef\u4ee5\u5728\u4e00\u4e2a\u65b9\u6cd5\u4e2d\u76f4\u63a5\u8c03\u7528\u53e6\u4e00\u4e2a\u65b9\u6cd5\uff0c\u800c\u65e0\u9700\u4f7f\u7528\u4efb\u4f55\u524d\u7f00\u3002\u8fd9\u79cd\u65b9\u5f0f\u901a\u5e38\u9002\u7528\u4e8e\u9759\u6001\u65b9\u6cd5\u548c\u7c7b\u65b9\u6cd5\u3002\u5b83\u53ef\u4ee5\u8ba9\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\u548c\u6613\u8bfb\u3002<\/p>\n<\/p>\n

class MyClass:<\/p>\n
    def method1(self):<\/p>\n
        print("Method 1 called")<\/p>\n
        self.method2()<\/p>\n
    def method2(self):<\/p>\n
        print("Method 2 called")<\/p>\n
obj = MyClass()<\/p>\n
obj.method1()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0cmethod1<\/code>\u76f4\u63a5\u8c03\u7528\u4e86method2<\/code>\uff0c\u5e76\u4e14\u7531\u4e8e\u5b83\u4eec\u90fd\u5728\u540c\u4e00\u4e2a\u7c7b\u4e2d\uff0c\u8c03\u7528\u662f\u76f4\u63a5\u7684\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u901a\u8fc7self\u5173\u952e\u5b57\u8c03\u7528<\/h3>\n<\/p>\n
\u5728\u7c7b\u7684\u5b9e\u4f8b\u65b9\u6cd5\u4e2d\uff0cself\u5173\u952e\u5b57\u662f\u5fc5\u987b\u7684\u3002self\u4ee3\u8868\u7c7b\u7684\u5b9e\u4f8b\uff0c\u4f7f\u7528self\u53ef\u4ee5\u8bbf\u95ee\u7c7b\u7684\u5c5e\u6027\u548c\u65b9\u6cd5<\/strong>\u3002\u8fd9\u4f7f\u5f97\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u7ef4\u62a4\u6027\u90fd\u5f97\u5230\u4e86\u6781\u5927\u7684\u63d0\u5347\u3002<\/p>\n<\/p>\n
class MyClass:<\/p>\n
    def method1(self):<\/p>\n
        print("Method 1 called")<\/p>\n
        self.method2()<\/p>\n
    def method2(self):<\/p>\n
        print("Method 2 called")<\/p>\n
obj = MyClass()<\/p>\n
obj.method1()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cmethod1<\/code>\u4f7f\u7528self.method2()<\/code>\u6765\u8c03\u7528method2<\/code>\u3002\u8fd9\u79cd\u65b9\u5f0f\u4e0d\u4ec5\u53ef\u4ee5\u8c03\u7528\u65b9\u6cd5\uff0c\u8fd8\u53ef\u4ee5\u8bbf\u95ee\u5c5e\u6027\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u901a\u8fc7\u7c7b\u540d\u8c03\u7528<\/h3>\n<\/p>\n
\u5728\u4e00\u4e9b\u7279\u6b8a\u60c5\u51b5\u4e0b\uff0c\u7279\u522b\u662f\u5f53\u6d89\u53ca\u5230\u7ee7\u627f\u548c\u591a\u6001\u65f6\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u901a\u8fc7\u7c7b\u540d\u6765\u8c03\u7528\u65b9\u6cd5\u3002\u8fd9\u79cd\u65b9\u5f0f\u901a\u5e38\u7528\u4e8e\u7c7b\u65b9\u6cd5\u548c\u9759\u6001\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
class MyClass:<\/p>\n
    @classmethod<\/p>\n
    def method1(cls):<\/p>\n
        print("Class Method 1 called")<\/p>\n
        cls.method2()<\/p>\n
    @classmethod<\/p>\n
    def method2(cls):<\/p>\n
        print("Class Method 2 called")<\/p>\n
MyClass.method1()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cmethod1<\/code>\u4f7f\u7528cls.method2()<\/code>\u6765\u8c03\u7528method2<\/code>\uff0c\u5176\u4e2dcls<\/code>\u662f\u7c7b\u672c\u8eab\u3002\u8fd9\u79cd\u65b9\u5f0f\u5728\u7c7b\u65b9\u6cd5\u4e2d\u975e\u5e38\u5e38\u89c1\u3002<\/p>\n<\/p>\n
\u56db\u3001\u901a\u8fc7super()\u8c03\u7528<\/h3>\n<\/p>\n
\u5728\u7ee7\u627f\u548c\u591a\u6001\u7684\u573a\u666f\u4e0b\uff0csuper()\u8c03\u7528<\/strong>\u662f\u4e00\u4e2a\u5f3a\u6709\u529b\u7684\u5de5\u5177\u3002\u5b83\u5141\u8bb8\u4f60\u8c03\u7528\u7236\u7c7b\u7684\u65b9\u6cd5\uff0c\u8fd9\u5bf9\u4e8e\u4ee3\u7801\u7684\u91cd\u7528\u6027\u548c\u6269\u5c55\u6027\u975e\u5e38\u6709\u5e2e\u52a9\u3002<\/p>\n<\/p>\n
class ParentClass:<\/p>\n
    def method1(self):<\/p>\n
        print("Parent Method 1 called")<\/p>\n
class ChildClass(ParentClass):<\/p>\n
    def method1(self):<\/p>\n
        print("Child Method 1 called")<\/p>\n
        super().method1()<\/p>\n
obj = ChildClass()<\/p>\n
obj.method1()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cChildClass<\/code>\u7684method1<\/code>\u8c03\u7528\u4e86ParentClass<\/code>\u7684method1<\/code>\uff0c\u8fd9\u4f7f\u5f97\u5b50\u7c7b\u53ef\u4ee5\u6269\u5c55\u7236\u7c7b\u7684\u529f\u80fd\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u4f7f\u7528\u88c5\u9970\u5668<\/h3>\n<\/p>\n
\u88c5\u9970\u5668\u662f\u4e00\u79cd\u975e\u5e38\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u5141\u8bb8\u4f60\u5728\u4e0d\u4fee\u6539\u51fd\u6570\u5b9a\u4e49\u7684\u60c5\u51b5\u4e0b\u6269\u5c55\u5176\u529f\u80fd\u3002\u88c5\u9970\u5668\u53ef\u4ee5\u7528\u4e8e\u65b9\u6cd5\u8c03\u7528\uff0c\u7279\u522b\u662f\u5728\u9700\u8981\u5728\u8c03\u7528\u524d\u540e\u6267\u884c\u67d0\u4e9b\u64cd\u4f5c\u65f6\u3002<\/p>\n<\/p>\n
def decorator(func):<\/p>\n
    def wrapper(*args, kwargs):<\/p>\n
        print("Before calling the method")<\/p>\n
        result = func(*args, kwargs)<\/p>\n
        print("After calling the method")<\/p>\n
        return result<\/p>\n
    return wrapper<\/p>\n
class MyClass:<\/p>\n
    @decorator<\/p>\n
    def method1(self):<\/p>\n
        print("Method 1 called")<\/p>\n
obj = MyClass()<\/p>\n
obj.method1()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cdecorator<\/code>\u5728method1<\/code>\u8c03\u7528\u524d\u540e\u6253\u5370\u4e86\u4e00\u4e9b\u4fe1\u606f\uff0c\u8fd9\u4f7f\u5f97\u65b9\u6cd5\u8c03\u7528\u66f4\u52a0\u7075\u6d3b\u548c\u53ef\u6269\u5c55\u3002<\/p>\n<\/p>\n
\u516d\u3001\u4f7f\u7528\u95ed\u5305<\/h3>\n<\/p>\n
\u95ed\u5305\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u51fd\u6570\uff0c\u5b83\u53ef\u4ee5\u6355\u83b7\u5e76\u8bb0\u4f4f\u5176\u521b\u5efa\u65f6\u7684\u4e0a\u4e0b\u6587\u73af\u5883\u3002\u5728\u7c7b\u65b9\u6cd5\u8c03\u7528\u4e2d\uff0c\u95ed\u5305\u53ef\u4ee5\u7528\u4e8e\u521b\u5efa\u52a8\u6001\u65b9\u6cd5\u6216\u5c5e\u6027\u3002<\/p>\n<\/p>\n
class MyClass:<\/p>\n
    def __init__(self, value):<\/p>\n
        self.value = value<\/p>\n
    def method1(self):<\/p>\n
        def inner_method():<\/p>\n
            print(f"Inner method called with value {self.value}")<\/p>\n
        return inner_method<\/p>\n
obj = MyClass(10)<\/p>\n
inner = obj.method1()<\/p>\n
inner()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cmethod1<\/code>\u8fd4\u56de\u4e86\u4e00\u4e2a\u95ed\u5305inner_method<\/code>\uff0c\u8fd9\u4e2a\u95ed\u5305\u8bb0\u4f4f\u4e86self.value<\/code>\u7684\u503c\u3002<\/p>\n<\/p>\n
\u4e03\u3001\u4f7f\u7528\u53cd\u5c04<\/h3>\n<\/p>\n
\u53cd\u5c04\u662f\u6307\u5728\u8fd0\u884c\u65f6\u52a8\u6001\u5730\u83b7\u53d6\u7c7b\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002Python\u63d0\u4f9b\u4e86\u5185\u7f6e\u7684getattr<\/code>\u51fd\u6570\u6765\u5b9e\u73b0\u53cd\u5c04\uff0c\u8fd9\u5728\u67d0\u4e9b\u52a8\u6001\u573a\u666f\u4e0b\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n
class MyClass:<\/p>\n
    def method1(self):<\/p>\n
        print("Method 1 called")<\/p>\n
obj = MyClass()<\/p>\n
method_name = 'method1'<\/p>\n
method = getattr(obj, method_name)<\/p>\n
method()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cgetattr<\/code>\u52a8\u6001\u5730\u83b7\u53d6\u4e86method1<\/code>\u65b9\u6cd5\uff0c\u5e76\u4e14\u6210\u529f\u5730\u8c03\u7528\u4e86\u5b83\u3002\u8fd9\u4f7f\u5f97\u4ee3\u7801\u5728\u5904\u7406\u672a\u77e5\u6216\u52a8\u6001\u65b9\u6cd5\u65f6\u66f4\u52a0\u7075\u6d3b\u3002<\/p>\n<\/p>\n
\u516b\u3001\u4f7f\u7528\u591a\u7ebf\u7a0b\u548c\u591a\u8fdb\u7a0b<\/h3>\n<\/p>\n
\u5728\u4e00\u4e9b\u9ad8\u6027\u80fd\u6216\u5e76\u53d1\u573a\u666f\u4e0b\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u5728\u591a\u7ebf\u7a0b\u6216\u591a\u8fdb\u7a0b\u4e2d\u8c03\u7528\u65b9\u6cd5\u3002Python\u7684threading<\/code>\u548cmultiprocessing<\/code>\u5e93\u53ef\u4ee5\u5e2e\u52a9\u4f60\u5b9e\u73b0\u8fd9\u4e00\u70b9\u3002<\/p>\n<\/p>\n
import threading<\/p>\n
class MyClass:<\/p>\n
    def method1(self):<\/p>\n
        print("Method 1 called")<\/p>\n
obj = MyClass()<\/p>\n
thread = threading.Thread(target=obj.method1)<\/p>\n
thread.start()<\/p>\n
thread.join()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cmethod1<\/code>\u5728\u4e00\u4e2a\u5355\u72ec\u7684\u7ebf\u7a0b\u4e2d\u88ab\u8c03\u7528\uff0c\u8fd9\u4f7f\u5f97\u65b9\u6cd5\u8c03\u7528\u66f4\u52a0\u5e76\u53d1\u548c\u9ad8\u6548\u3002<\/p>\n<\/p>\n
\u4e5d\u3001\u4f7f\u7528\u5f02\u6b65\u7f16\u7a0b<\/h3>\n<\/p>\n
\u5f02\u6b65\u7f16\u7a0b\u662f\u4e00\u79cd\u9ad8\u6548\u7684I\/O\u64cd\u4f5c\u65b9\u5f0f\uff0c\u7279\u522b\u9002\u7528\u4e8e\u7f51\u7edc\u8bf7\u6c42\u548c\u6587\u4ef6\u64cd\u4f5c\u3002Python\u7684asyncio<\/code>\u5e93\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u5f02\u6b65\u7f16\u7a0b\u652f\u6301\u3002<\/p>\n<\/p>\n
import asyncio<\/p>\n
class MyClass:<\/p>\n
    async def method1(self):<\/p>\n
        print("Method 1 called")<\/p>\n
        awAI<\/a>t self.method2()<\/p>\n
    async def method2(self):<\/p>\n
        print("Method 2 called")<\/p>\n
obj = MyClass()<\/p>\n
asyncio.run(obj.method1())<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cmethod1<\/code>\u548cmethod2<\/code>\u90fd\u662f\u5f02\u6b65\u65b9\u6cd5\uff0c\u901a\u8fc7await<\/code>\u5173\u952e\u5b57\u5b9e\u73b0\u5f02\u6b65\u8c03\u7528\u3002<\/p>\n<\/p>\n
\u5341\u3001\u4f7f\u7528\u5143\u7c7b<\/h3>\n<\/p>\n
\u5143\u7c7b\u662f\u521b\u5efa\u7c7b\u7684\u7c7b\uff0c\u5b83\u4eec\u5141\u8bb8\u4f60\u5728\u7c7b\u521b\u5efa\u65f6\u52a8\u6001\u5730\u4fee\u6539\u7c7b\u7684\u884c\u4e3a\u3002\u5143\u7c7b\u53ef\u4ee5\u7528\u4e8e\u65b9\u6cd5\u8c03\u7528\uff0c\u7279\u522b\u662f\u5728\u9700\u8981\u5728\u7c7b\u521b\u5efa\u65f6\u6ce8\u5165\u6216\u4fee\u6539\u65b9\u6cd5\u65f6\u3002<\/p>\n<\/p>\n
class Meta(type):<\/p>\n
    def __new__(cls, name, bases, dct):<\/p>\n
        def method(self):<\/p>\n
            print("Injected method called")<\/p>\n
        dct['injected_method'] = method<\/p>\n
        return super().__new__(cls, name, bases, dct)<\/p>\n
class MyClass(metaclass=Meta):<\/p>\n
    pass<\/p>\n
obj = MyClass()<\/p>\n
obj.injected_method()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cMeta<\/code>\u5143\u7c7b\u5728\u521b\u5efaMyClass<\/code>\u65f6\u6ce8\u5165\u4e86\u4e00\u4e2a\u65b9\u6cd5injected_method<\/code>\uff0c\u5e76\u4e14\u6210\u529f\u8c03\u7528\u4e86\u5b83\u3002<\/p>\n<\/p>\n
\u901a\u8fc7\u4e0a\u8ff0\u591a\u79cd\u65b9\u5f0f\uff0c\u4f60\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u7684\u573a\u666f\u548c\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u8c03\u7528\u65b9\u5f0f\u3002\u6bcf\u79cd\u65b9\u5f0f\u90fd\u6709\u5176\u4f18\u7f3a\u70b9\u548c\u9002\u7528\u573a\u666f\uff0c\u5408\u7406\u4f7f\u7528\u53ef\u4ee5\u4f7f\u4ee3\u7801\u66f4\u52a0\u9ad8\u6548\u3001\u53ef\u8bfb\u548c\u6613\u7ef4\u62a4\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
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