{"id":948538,"date":"2024-12-27T00:04:33","date_gmt":"2024-12-26T16:04:33","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/948538.html"},"modified":"2024-12-27T00:04:34","modified_gmt":"2024-12-26T16:04:34","slug":"python%e5%a6%82%e4%bd%95%e5%88%a4%e6%96%ad404","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/948538.html","title":{"rendered":"python\u5982\u4f55\u5224\u65ad404"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25083847\/c1bc4870-9345-40fa-87dd-cc4e8b44e264.webp\" alt=\"python\u5982\u4f55\u5224\u65ad404\" \/><\/p>\n<p><p> \u5f00\u5934\u6bb5\u843d\uff1a<br \/>\u5728Python\u4e2d\u5224\u65ad404\u9519\u8bef\uff0c\u53ef\u4ee5\u901a\u8fc7<strong>\u4f7f\u7528requests\u5e93\u3001\u68c0\u67e5\u54cd\u5e94\u72b6\u6001\u7801\u3001\u5904\u7406\u5f02\u5e38<\/strong>\u6765\u5b9e\u73b0\u3002\u5176\u4e2d\uff0c\u4f7f\u7528requests\u5e93\u662f\u6700\u5e38\u7528\u7684\u65b9\u6cd5\uff0c\u56e0\u4e3a\u5b83\u63d0\u4f9b\u4e86\u7b80\u6d01\u7684\u63a5\u53e3\u6765\u8fdb\u884cHTTP\u8bf7\u6c42\u5e76\u83b7\u53d6\u54cd\u5e94\u72b6\u6001\u7801\u3002\u72b6\u6001\u7801\u662fHTTP\u534f\u8bae\u4e2d\u7528\u4e8e\u8868\u793a\u8bf7\u6c42\u7ed3\u679c\u7684\u6570\u5b57\uff0c\u5176\u4e2d404\u8868\u793a\u8bf7\u6c42\u7684\u8d44\u6e90\u672a\u627e\u5230\u3002\u901a\u8fc7\u68c0\u67e5\u54cd\u5e94\u5bf9\u8c61\u7684\u72b6\u6001\u7801\u5c5e\u6027\uff0c\u53ef\u4ee5\u8f7b\u677e\u5224\u65ad\u662f\u5426\u53d1\u751f\u4e86404\u9519\u8bef\u3002\u5982\u679c\u72b6\u6001\u7801\u4e3a404\uff0c\u5219\u8bf4\u660e\u8bf7\u6c42\u7684\u8d44\u6e90\u4e0d\u5b58\u5728\uff0c\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u8fd9\u4e00\u5224\u65ad\u8fdb\u884c\u76f8\u5e94\u7684\u9519\u8bef\u5904\u7406\u6216\u91cd\u8bd5\u903b\u8f91\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u4f7f\u7528requests\u5e93\u5224\u65ad404\u9519\u8bef\u7684\u65b9\u6cd5\uff0c\u5e76\u63a2\u8ba8\u5982\u4f55\u6709\u6548\u5904\u7406\u548c\u89e3\u51b3\u8fd9\u4e9b\u9519\u8bef\u3002<\/p>\n<\/p>\n<p><p>\u6b63\u6587\uff1a<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u4f7f\u7528REQUESTS\u5e93<\/h3>\n<\/p>\n<p><p>\u4f7f\u7528requests\u5e93\u662f\u5224\u65ad404\u9519\u8bef\u7684\u6700\u5e38\u7528\u65b9\u6cd5\u3002requests\u5e93\u662fPython\u4e2d\u8fdb\u884cHTTP\u8bf7\u6c42\u7684\u5f3a\u5927\u5de5\u5177\uff0c\u5b83\u63d0\u4f9b\u4e86\u7b80\u6d01\u7684\u63a5\u53e3\u6765\u53d1\u8d77GET\u3001POST\u7b49\u8bf7\u6c42\uff0c\u5e76\u83b7\u53d6\u54cd\u5e94\u5bf9\u8c61\u3002\u901a\u8fc7\u68c0\u67e5\u54cd\u5e94\u5bf9\u8c61\u7684\u72b6\u6001\u7801\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5224\u65ad\u662f\u5426\u53d1\u751f\u4e86404\u9519\u8bef\u3002<\/p>\n<\/p>\n<p><h4>1. \u5b89\u88c5\u548c\u5bfc\u5165REQUESTS\u5e93<\/h4>\n<\/p>\n<p><p>\u8981\u4f7f\u7528requests\u5e93\uff0c\u9996\u5148\u9700\u8981\u5b89\u88c5\u5b83\u3002\u53ef\u4ee5\u901a\u8fc7pip\u547d\u4ee4\u6765\u5b89\u88c5\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-bash\">pip install requests<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u53ef\u4ee5\u5728Python\u811a\u672c\u4e2d\u5bfc\u5165requests\u5e93\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import requests<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2. \u53d1\u8d77HTTP\u8bf7\u6c42\u5e76\u68c0\u67e5\u72b6\u6001\u7801<\/h4>\n<\/p>\n<p><p>\u4f7f\u7528requests\u5e93\u53d1\u8d77HTTP\u8bf7\u6c42\uff0c\u5e76\u83b7\u53d6\u54cd\u5e94\u5bf9\u8c61\u3002\u7136\u540e\uff0c\u901a\u8fc7\u68c0\u67e5\u54cd\u5e94\u5bf9\u8c61\u7684\u72b6\u6001\u7801\u5c5e\u6027\u6765\u5224\u65ad\u662f\u5426\u53d1\u751f\u4e86404\u9519\u8bef\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">response = requests.get(&#39;http:\/\/example.com\/resource&#39;)<\/p>\n<p>if response.status_code == 404:<\/p>\n<p>    print(&quot;Resource not found (404 error)&quot;)<\/p>\n<p>else:<\/p>\n<p>    print(&quot;Resource found&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528requests.get()\u65b9\u6cd5\u53d1\u8d77\u4e86\u4e00\u4e2aGET\u8bf7\u6c42\uff0c\u5e76\u5c06\u54cd\u5e94\u5bf9\u8c61\u5b58\u50a8\u5728\u53d8\u91cfresponse\u4e2d\u3002\u7136\u540e\uff0c\u901a\u8fc7\u68c0\u67e5response.status_code\u5c5e\u6027\u6765\u5224\u65ad\u662f\u5426\u4e3a404\u9519\u8bef\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u68c0\u67e5\u54cd\u5e94\u72b6\u6001\u7801<\/h3>\n<\/p>\n<p><p>\u54cd\u5e94\u72b6\u6001\u7801\u662fHTTP\u534f\u8bae\u4e2d\u7528\u4e8e\u8868\u793a\u8bf7\u6c42\u7ed3\u679c\u7684\u6570\u5b57\u3002\u5e38\u89c1\u7684\u72b6\u6001\u7801\u5305\u62ec200\uff08\u8bf7\u6c42\u6210\u529f\uff09\u3001404\uff08\u8d44\u6e90\u672a\u627e\u5230\uff09\u3001500\uff08\u670d\u52a1\u5668\u9519\u8bef\uff09\u7b49\u3002\u901a\u8fc7\u68c0\u67e5\u54cd\u5e94\u72b6\u6001\u7801\uff0c\u6211\u4eec\u53ef\u4ee5\u5224\u65ad\u8bf7\u6c42\u662f\u5426\u6210\u529f\uff0c\u4ee5\u53ca\u662f\u5426\u53d1\u751f\u4e86404\u9519\u8bef\u3002<\/p>\n<\/p>\n<p><h4>1. \u5e38\u89c1\u72b6\u6001\u7801\u53ca\u5176\u542b\u4e49<\/h4>\n<\/p>\n<p><p>\u7406\u89e3\u5e38\u89c1\u7684HTTP\u72b6\u6001\u7801\u6709\u52a9\u4e8e\u6211\u4eec\u66f4\u597d\u5730\u5904\u7406\u8bf7\u6c42\u7ed3\u679c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u72b6\u6001\u7801\u53ca\u5176\u542b\u4e49\uff1a<\/p>\n<\/p>\n<ul>\n<li><strong>200<\/strong>: \u8bf7\u6c42\u6210\u529f\uff0c\u670d\u52a1\u5668\u8fd4\u56de\u4e86\u8bf7\u6c42\u7684\u8d44\u6e90\u3002<\/li>\n<li><strong>301<\/strong>: \u8d44\u6e90\u5df2\u6c38\u4e45\u79fb\u52a8\uff0c\u5ba2\u6237\u7aef\u5e94\u8be5\u4f7f\u7528\u65b0\u7684URL\u3002<\/li>\n<li><strong>403<\/strong>: \u670d\u52a1\u5668\u62d2\u7edd\u8bf7\u6c42\uff0c\u5ba2\u6237\u7aef\u65e0\u6743\u8bbf\u95ee\u8d44\u6e90\u3002<\/li>\n<li><strong>404<\/strong>: \u8bf7\u6c42\u7684\u8d44\u6e90\u672a\u627e\u5230\uff0c\u670d\u52a1\u5668\u65e0\u6cd5\u627e\u5230\u6307\u5b9a\u7684\u8d44\u6e90\u3002<\/li>\n<li><strong>500<\/strong>: \u670d\u52a1\u5668\u5185\u90e8\u9519\u8bef\uff0c\u670d\u52a1\u5668\u5728\u5904\u7406\u8bf7\u6c42\u65f6\u9047\u5230\u4e86\u9519\u8bef\u3002<\/li>\n<\/ul>\n<p><h4>2. \u4f7f\u7528\u72b6\u6001\u7801\u5224\u65ad404\u9519\u8bef<\/h4>\n<\/p>\n<p><p>\u5728\u4f7f\u7528requests\u5e93\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u68c0\u67e5\u54cd\u5e94\u5bf9\u8c61\u7684\u72b6\u6001\u7801\u5c5e\u6027\u6765\u5224\u65ad\u662f\u5426\u53d1\u751f\u4e86404\u9519\u8bef\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">response = requests.get(&#39;http:\/\/example.com\/resource&#39;)<\/p>\n<p>if response.status_code == 404:<\/p>\n<p>    print(&quot;Resource not found (404 error)&quot;)<\/p>\n<p>else:<\/p>\n<p>    print(&quot;Resource found, status code:&quot;, response.status_code)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e09\u3001\u5904\u7406\u5f02\u5e38<\/h3>\n<\/p>\n<p><p>\u5728\u8fdb\u884cHTTP\u8bf7\u6c42\u65f6\uff0c\u53ef\u80fd\u4f1a\u9047\u5230\u5404\u79cd\u5f02\u5e38\u60c5\u51b5\uff0c\u4f8b\u5982\u7f51\u7edc\u8fde\u63a5\u5931\u8d25\u3001\u8bf7\u6c42\u8d85\u65f6\u7b49\u3002\u901a\u8fc7\u5904\u7406\u8fd9\u4e9b\u5f02\u5e38\uff0c\u53ef\u4ee5\u63d0\u9ad8\u7a0b\u5e8f\u7684\u5065\u58ee\u6027\uff0c\u5e76\u5728\u53d1\u751f\u9519\u8bef\u65f6\u8fdb\u884c\u76f8\u5e94\u7684\u5904\u7406\u3002<\/p>\n<\/p>\n<p><h4>1. \u4f7f\u7528TRY-EXCEPT\u5757<\/h4>\n<\/p>\n<p><p>\u4f7f\u7528try-except\u5757\u53ef\u4ee5\u6355\u83b7\u548c\u5904\u7406\u5f02\u5e38\u3002\u5728\u53d1\u8d77\u8bf7\u6c42\u65f6\uff0c\u53ef\u4ee5\u5c06\u8bf7\u6c42\u4ee3\u7801\u653e\u5165try\u5757\u4e2d\uff0c\u5e76\u5728except\u5757\u4e2d\u5904\u7406\u53ef\u80fd\u51fa\u73b0\u7684\u5f02\u5e38\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">try:<\/p>\n<p>    response = requests.get(&#39;http:\/\/example.com\/resource&#39;)<\/p>\n<p>    if response.status_code == 404:<\/p>\n<p>        print(&quot;Resource not found (404 error)&quot;)<\/p>\n<p>except requests.exceptions.RequestException as e:<\/p>\n<p>    print(&quot;An error occurred:&quot;, e)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528try-except\u5757\u6355\u83b7requests.exceptions.RequestException\u5f02\u5e38\uff0c\u5e76\u5728\u53d1\u751f\u9519\u8bef\u65f6\u8f93\u51fa\u9519\u8bef\u4fe1\u606f\u3002<\/p>\n<\/p>\n<p><h4>2. \u5e38\u89c1\u7684REQUESTS\u5e93\u5f02\u5e38<\/h4>\n<\/p>\n<p><p>\u5728\u4f7f\u7528requests\u5e93\u65f6\uff0c\u53ef\u80fd\u4f1a\u9047\u5230\u4ee5\u4e0b\u5e38\u89c1\u5f02\u5e38\uff1a<\/p>\n<\/p>\n<ul>\n<li><strong>requests.exceptions.Timeout<\/strong>: \u8bf7\u6c42\u8d85\u65f6\u3002<\/li>\n<li><strong>requests.exceptions.ConnectionError<\/strong>: \u7f51\u7edc\u8fde\u63a5\u9519\u8bef\u3002<\/li>\n<li><strong>requests.exceptions.HTTPError<\/strong>: HTTP\u8bf7\u6c42\u9519\u8bef\u3002<\/li>\n<li><strong>requests.exceptions.RequestException<\/strong>: \u6240\u6709\u8bf7\u6c42\u5f02\u5e38\u7684\u57fa\u7c7b\u3002<\/li>\n<\/ul>\n<p><p>\u901a\u8fc7\u6355\u83b7\u8fd9\u4e9b\u5f02\u5e38\uff0c\u53ef\u4ee5\u5728\u7a0b\u5e8f\u4e2d\u8fdb\u884c\u76f8\u5e94\u7684\u9519\u8bef\u5904\u7406\u3002<\/p>\n<\/p>\n<p><h3>\u56db\u3001\u6709\u6548\u5904\u7406\u548c\u89e3\u51b3404\u9519\u8bef<\/h3>\n<\/p>\n<p><p>404\u9519\u8bef\u8868\u793a\u8bf7\u6c42\u7684\u8d44\u6e90\u672a\u627e\u5230\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u5bf9404\u9519\u8bef\u8fdb\u884c\u6709\u6548\u7684\u5904\u7406\u548c\u89e3\u51b3\uff0c\u4ee5\u786e\u4fdd\u7a0b\u5e8f\u7684\u5065\u58ee\u6027\u548c\u7528\u6237\u4f53\u9a8c\u3002<\/p>\n<\/p>\n<p><h4>1. \u63d0\u793a\u7528\u6237\u8d44\u6e90\u4e0d\u53ef\u7528<\/h4>\n<\/p>\n<p><p>\u5f53\u53d1\u751f404\u9519\u8bef\u65f6\uff0c\u53ef\u4ee5\u63d0\u793a\u7528\u6237\u8d44\u6e90\u4e0d\u53ef\u7528\uff0c\u5e76\u63d0\u4f9b\u5176\u4ed6\u53ef\u7528\u7684\u9009\u9879\u3002\u4f8b\u5982\uff0c\u663e\u793a\u4e00\u6761\u53cb\u597d\u7684\u9519\u8bef\u6d88\u606f\uff0c\u5e76\u5efa\u8bae\u7528\u6237\u68c0\u67e5URL\u6216\u8bbf\u95ee\u5176\u4ed6\u9875\u9762\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">response = requests.get(&#39;http:\/\/example.com\/resource&#39;)<\/p>\n<p>if response.status_code == 404:<\/p>\n<p>    print(&quot;The requested resource is not av<a href=\"https:\/\/docs.pingcode.com\/blog\/59162.html\" target=\"_blank\">AI<\/a>lable. Please check the URL or visit our homepage.&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2. \u5b9e\u73b0\u91cd\u8bd5\u903b\u8f91<\/h4>\n<\/p>\n<p><p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c404\u9519\u8bef\u53ef\u80fd\u662f\u4e34\u65f6\u7684\uff0c\u8d44\u6e90\u53ef\u80fd\u5728\u7a0d\u540e\u53d8\u5f97\u53ef\u7528\u3002\u53ef\u4ee5\u5b9e\u73b0\u91cd\u8bd5\u903b\u8f91\uff0c\u5728404\u9519\u8bef\u53d1\u751f\u65f6\u8fdb\u884c\u591a\u6b21\u91cd\u8bd5\uff0c\u4ee5\u589e\u52a0\u8bf7\u6c42\u6210\u529f\u7684\u673a\u4f1a\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import time<\/p>\n<p>retry_count = 3<\/p>\n<p>for attempt in range(retry_count):<\/p>\n<p>    response = requests.get(&#39;http:\/\/example.com\/resource&#39;)<\/p>\n<p>    if response.status_code == 404:<\/p>\n<p>        print(&quot;Resource not found (404 error), retrying...&quot;)<\/p>\n<p>        time.sleep(2)  # \u7b49\u5f852\u79d2\u540e\u91cd\u8bd5<\/p>\n<p>    else:<\/p>\n<p>        print(&quot;Resource found&quot;)<\/p>\n<p>        break<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u901a\u8fc7\u5728404\u9519\u8bef\u53d1\u751f\u65f6\u8fdb\u884c\u91cd\u8bd5\uff0c\u53ef\u4ee5\u63d0\u9ad8\u8bf7\u6c42\u6210\u529f\u7684\u53ef\u80fd\u6027\u3002<\/p>\n<\/p>\n<p><h4>3. \u8bb0\u5f55\u9519\u8bef\u65e5\u5fd7<\/h4>\n<\/p>\n<p><p>\u5728\u5904\u7406404\u9519\u8bef\u65f6\uff0c\u53ef\u4ee5\u8bb0\u5f55\u9519\u8bef\u65e5\u5fd7\uff0c\u4ee5\u4fbf\u540e\u7eed\u5206\u6790\u548c\u8c03\u8bd5\u3002\u8bb0\u5f55\u9519\u8bef\u65e5\u5fd7\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u4e86\u89e3\u54ea\u4e9b\u8d44\u6e90\u9891\u7e41\u51fa\u73b0404\u9519\u8bef\uff0c\u5e76\u91c7\u53d6\u76f8\u5e94\u7684\u63aa\u65bd\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import logging<\/p>\n<p>logging.basicConfig(filename=&#39;error.log&#39;, level=logging.ERROR)<\/p>\n<p>response = requests.get(&#39;http:\/\/example.com\/resource&#39;)<\/p>\n<p>if response.status_code == 404:<\/p>\n<p>    logging.error(&quot;Resource not found (404 error): http:\/\/example.com\/resource&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u901a\u8fc7\u8bb0\u5f55\u9519\u8bef\u65e5\u5fd7\uff0c\u6211\u4eec\u53ef\u4ee5\u66f4\u597d\u5730\u4e86\u89e3\u548c\u89e3\u51b3404\u9519\u8bef\u3002<\/p>\n<\/p>\n<p><h3>\u4e94\u3001\u603b\u7ed3<\/h3>\n<\/p>\n<p><p>\u5728Python\u4e2d\u5224\u65ad404\u9519\u8bef\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528requests\u5e93\u3001\u68c0\u67e5\u54cd\u5e94\u72b6\u6001\u7801\u3001\u5904\u7406\u5f02\u5e38\u6765\u5b9e\u73b0\u3002\u901a\u8fc7\u68c0\u67e5\u54cd\u5e94\u5bf9\u8c61\u7684\u72b6\u6001\u7801\u5c5e\u6027\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5224\u65ad\u662f\u5426\u53d1\u751f\u4e86404\u9519\u8bef\u3002\u5728\u5904\u7406404\u9519\u8bef\u65f6\uff0c\u53ef\u4ee5\u63d0\u793a\u7528\u6237\u8d44\u6e90\u4e0d\u53ef\u7528\u3001\u5b9e\u73b0\u91cd\u8bd5\u903b\u8f91\u3001\u8bb0\u5f55\u9519\u8bef\u65e5\u5fd7\u7b49\u3002\u8fd9\u4e9b\u65b9\u6cd5\u6709\u52a9\u4e8e\u63d0\u9ad8\u7a0b\u5e8f\u7684\u5065\u58ee\u6027\u548c\u7528\u6237\u4f53\u9a8c\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u9002\u5408\u7684\u65b9\u6cd5\u6765\u5904\u7406404\u9519\u8bef\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u5904\u7406HTTP\u8bf7\u6c42\u4ee5\u68c0\u6d4b404\u9519\u8bef\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528<code>requests<\/code>\u5e93\u6765\u53d1\u9001HTTP\u8bf7\u6c42\u5e76\u68c0\u67e5\u54cd\u5e94\u72b6\u6001\u7801\u3002\u82e5\u72b6\u6001\u7801\u4e3a404\uff0c\u5219\u8868\u793a\u8bf7\u6c42\u7684\u9875\u9762\u4e0d\u5b58\u5728\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre><code class=\"language-python\">import requests\n\nurl = &quot;http:\/\/example.com\/somepage&quot;\nresponse = requests.get(url)\n\nif response.status_code == 404:\n    print(&quot;\u9875\u9762\u672a\u627e\u5230\uff08404\u9519\u8bef\uff09&quot;)\nelse:\n    print(&quot;\u9875\u9762\u6b63\u5e38\u8bbf\u95ee&quot;)\n<\/code><\/pre>\n<p>\u8be5\u4ee3\u7801\u9996\u5148\u5bfc\u5165\u4e86<code>requests<\/code>\u5e93\uff0c\u5e76\u901a\u8fc7<code>get<\/code>\u65b9\u6cd5\u53d1\u9001\u8bf7\u6c42\u3002\u901a\u8fc7\u68c0\u67e5<code>status_code<\/code>\u5c5e\u6027\uff0c\u53ef\u4ee5\u8f7b\u677e\u5224\u65ad\u662f\u5426\u5b58\u5728404\u9519\u8bef\u3002<\/p>\n<p><strong>\u5982\u4f55\u4f7f\u7528Python\u7684\u5f02\u5e38\u5904\u7406\u673a\u5236\u6355\u6349404\u9519\u8bef\uff1f<\/strong><br \/>\u5728\u8fdb\u884cHTTP\u8bf7\u6c42\u65f6\uff0c\u53ef\u4ee5\u5229\u7528\u5f02\u5e38\u5904\u7406\u6765\u6355\u83b7404\u9519\u8bef\u3002\u901a\u8fc7<code>requests<\/code>\u5e93\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528<code>raise_for_status()<\/code>\u65b9\u6cd5\u6765\u5f15\u53d1HTTPError\uff0c\u4fbf\u4e8e\u5904\u7406\u7279\u5b9a\u7684\u9519\u8bef\u72b6\u6001\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-python\">import requests\n\nurl = &quot;http:\/\/example.com\/somepage&quot;\n\ntry:\n    response = requests.get(url)\n    response.raise_for_status()  # \u5f53\u54cd\u5e94\u72b6\u6001\u7801\u4e0d\u662f200\u65f6\u5f15\u53d1\u5f02\u5e38\nexcept requests.exceptions.HTTPError as err:\n    if response.status_code == 404:\n        print(&quot;\u8bf7\u6c42\u7684\u9875\u9762\u4e0d\u5b58\u5728\uff08404\u9519\u8bef\uff09&quot;)\n    else:\n        print(f&quot;\u53d1\u751f\u4e86\u5176\u4ed6\u9519\u8bef\uff1a{err}&quot;)\n<\/code><\/pre>\n<p>\u8fd9\u79cd\u65b9\u6cd5\u63d0\u4f9b\u4e86\u66f4\u4f18\u96c5\u7684\u9519\u8bef\u5904\u7406\u65b9\u5f0f\uff0c\u4f7f\u4ee3\u7801\u53ef\u8bfb\u6027\u66f4\u5f3a\u3002<\/p>\n<p><strong>\u5982\u4f55\u5728Python\u4e2d\u5b9e\u73b0\u81ea\u5b9a\u4e49404\u9519\u8bef\u5904\u7406\uff1f<\/strong><br \/>\u5982\u679c\u60a8\u5728\u5f00\u53d1\u4e00\u4e2aWeb\u5e94\u7528\u7a0b\u5e8f\uff0c\u53ef\u80fd\u9700\u8981\u5728\u68c0\u6d4b\u5230404\u9519\u8bef\u65f6\u8fd4\u56de\u81ea\u5b9a\u4e49\u7684\u9519\u8bef\u9875\u9762\u6216\u6d88\u606f\u3002\u4f7f\u7528Flask\u6846\u67b6\uff0c\u53ef\u4ee5\u901a\u8fc7\u5b9a\u4e49\u9519\u8bef\u5904\u7406\u5668\u6765\u5b9e\u73b0\uff1a<\/p>\n<pre><code class=\"language-python\">from flask import Flask, render_template\n\napp = Flask(__name__)\n\n@app.errorhandler(404)\ndef page_not_found(e):\n    return render_template(&#39;404.html&#39;), 404\n\nif __name__ == &quot;__main__&quot;:\n    app.run()\n<\/code><\/pre>\n<p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5f53\u7528\u6237\u8bf7\u6c42\u7684\u9875\u9762\u4e0d\u5b58\u5728\u65f6\uff0cFlask\u4f1a\u81ea\u52a8\u8c03\u7528<code>page_not_found<\/code>\u51fd\u6570\uff0c\u5e76\u8fd4\u56de\u81ea\u5b9a\u4e49\u7684404\u9875\u9762\u3002\u8fd9\u79cd\u65b9\u6cd5\u4e3a\u7528\u6237\u63d0\u4f9b\u4e86\u66f4\u53cb\u597d\u7684\u4f53\u9a8c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5f00\u5934\u6bb5\u843d\uff1a\u5728Python\u4e2d\u5224\u65ad404\u9519\u8bef\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528requests\u5e93\u3001\u68c0\u67e5\u54cd\u5e94\u72b6\u6001\u7801\u3001\u5904\u7406\u5f02\u5e38\u6765\u5b9e\u73b0\u3002\u5176\u4e2d [&hellip;]","protected":false},"author":3,"featured_media":948541,"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\/948538"}],"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=948538"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/948538\/revisions"}],"predecessor-version":[{"id":948543,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/948538\/revisions\/948543"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/948541"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=948538"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=948538"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=948538"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}