{"id":12723,"date":"2024-03-14T16:29:56","date_gmt":"2024-03-14T16:29:56","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-set-a-timeout-for-subprocess-popen-in-python\/"},"modified":"2025-08-05T05:53:02","modified_gmt":"2025-08-05T05:53:02","slug":"how-to-set-a-timeout-for-subprocess-popen-in-python","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-set-a-timeout-for-subprocess-popen-in-python\/","title":{"rendered":"Python Subprocess Timeout Guide"},"content":{"rendered":"<p>In Python, you can set a timeout using the subprocess.run() function. Introduced in Python 3.5, subprocess.run() makes it easy to execute external commands and wait for them to finish.<\/p>\n<p>Here is an example code for setting a timeout.<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> subprocess\r\n\r\n<span class=\"hljs-comment\"># \u6267\u884c\u547d\u4ee4\uff0c\u5e76\u8bbe\u7f6e\u8d85\u65f6\u65f6\u95f4\u4e3a5\u79d2<\/span>\r\n<span class=\"hljs-keyword\">try<\/span>:\r\n    result = subprocess.run([<span class=\"hljs-string\">'command'<\/span>, <span class=\"hljs-string\">'arg1'<\/span>, <span class=\"hljs-string\">'arg2'<\/span>], timeout=<span class=\"hljs-number\">5<\/span>, check=<span class=\"hljs-literal\">True<\/span>)\r\n    <span class=\"hljs-comment\"># \u5982\u679c\u547d\u4ee4\u6210\u529f\u6267\u884c\uff0c\u53ef\u4ee5\u901a\u8fc7result\u7684\u5c5e\u6027\u83b7\u53d6\u547d\u4ee4\u7684\u8f93\u51fa\u3001\u8fd4\u56de\u7801\u7b49\u4fe1\u606f<\/span>\r\n    <span class=\"hljs-built_in\">print<\/span>(<span class=\"hljs-string\">'\u547d\u4ee4\u8f93\u51fa:'<\/span>, result.stdout)\r\n    <span class=\"hljs-built_in\">print<\/span>(<span class=\"hljs-string\">'\u8fd4\u56de\u7801:'<\/span>, result.returncode)\r\n<span class=\"hljs-keyword\">except<\/span> subprocess.TimeoutExpired:\r\n    <span class=\"hljs-comment\"># \u5982\u679c\u8d85\u65f6\uff0c\u53ef\u4ee5\u5728\u8fd9\u91cc\u5904\u7406\u8d85\u65f6\u60c5\u51b5<\/span>\r\n    <span class=\"hljs-built_in\">print<\/span>(<span class=\"hljs-string\">'\u547d\u4ee4\u6267\u884c\u8d85\u65f6'<\/span>)\r\n<span class=\"hljs-keyword\">except<\/span> subprocess.CalledProcessError <span class=\"hljs-keyword\">as<\/span> e:\r\n    <span class=\"hljs-comment\"># \u5982\u679c\u547d\u4ee4\u6267\u884c\u5931\u8d25\uff0c\u53ef\u4ee5\u5728\u8fd9\u91cc\u5904\u7406\u5931\u8d25\u60c5\u51b5<\/span>\r\n    <span class=\"hljs-built_in\">print<\/span>(<span class=\"hljs-string\">'\u547d\u4ee4\u6267\u884c\u5931\u8d25:'<\/span>, e.returncode, e.output)\r\n<\/code><\/pre>\n<p>In the example code above, the timeout parameter of the subprocess.run() function is used to set the time limit in seconds. If the command is not completed within the specified timeout, a subprocess.TimeoutExpired exception will be raised.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In Python, you can set a timeout using the subprocess.run() function. Introduced in Python 3.5, subprocess.run() makes it easy to execute external commands and wait for them to finish. Here is an example code for setting a timeout. import subprocess # \u6267\u884c\u547d\u4ee4\uff0c\u5e76\u8bbe\u7f6e\u8d85\u65f6\u65f6\u95f4\u4e3a5\u79d2 try: result = subprocess.run([&#8216;command&#8217;, &#8216;arg1&#8217;, &#8216;arg2&#8217;], timeout=5, check=True) # \u5982\u679c\u547d\u4ee4\u6210\u529f\u6267\u884c\uff0c\u53ef\u4ee5\u901a\u8fc7result\u7684\u5c5e\u6027\u83b7\u53d6\u547d\u4ee4\u7684\u8f93\u51fa\u3001\u8fd4\u56de\u7801\u7b49\u4fe1\u606f print(&#8216;\u547d\u4ee4\u8f93\u51fa:&#8217;, result.stdout) print(&#8216;\u8fd4\u56de\u7801:&#8217;, [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[1747,72,212,7779,9773],"class_list":["post-12723","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-process-management","tag-python","tag-python-programming","tag-subprocess","tag-timeout"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Python Subprocess Timeout Guide - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Master setting timeouts for Python subprocess operations. 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