{"id":986977,"date":"2024-12-27T07:49:34","date_gmt":"2024-12-26T23:49:34","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/986977.html"},"modified":"2024-12-27T07:49:36","modified_gmt":"2024-12-26T23:49:36","slug":"python%e5%a6%82%e4%bd%95%e8%ae%be%e7%bd%ae%e6%97%b6%e9%97%b4%e7%bb%88%e6%ad%a2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/986977.html","title":{"rendered":"python\u5982\u4f55\u8bbe\u7f6e\u65f6\u95f4\u7ec8\u6b62"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25063313\/8331816f-dc02-4a25-a5f9-612cf3f9e8c2.webp\" alt=\"python\u5982\u4f55\u8bbe\u7f6e\u65f6\u95f4\u7ec8\u6b62\" \/><\/p>\n<p><p> <strong>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528<code>time<\/code>\u6a21\u5757\u7684<code>time.sleep()<\/code>\u65b9\u6cd5\u8bbe\u7f6e\u65f6\u95f4\u7ec8\u6b62\uff0c\u4f7f\u7528<code>datetime<\/code>\u6a21\u5757\u8fdb\u884c\u65f6\u95f4\u6bd4\u8f83\u3001\u4f7f\u7528\u5b9a\u65f6\u5668\u3001\u4ee5\u53ca\u5904\u7406\u8d85\u65f6\u5f02\u5e38\u6765\u5b9e\u73b0\u65f6\u95f4\u7ec8\u6b62\u3002\u5176\u4e2d\uff0c\u4f7f\u7528\u5b9a\u65f6\u5668\u662f\u6700\u5e38\u7528\u7684\u65b9\u6cd5\uff0c\u56e0\u4e3a\u5b83\u53ef\u4ee5\u5728\u6307\u5b9a\u7684\u65f6\u95f4\u540e\u81ea\u52a8\u6267\u884c\u67d0\u4e2a\u64cd\u4f5c\u3002<\/strong>\u8be6\u7ec6\u63cf\u8ff0\u5982\u4e0b\uff1a  <\/p>\n<\/p>\n<p><p>\u4f7f\u7528\u5b9a\u65f6\u5668\uff08Timer\uff09\u53ef\u4ee5\u65b9\u4fbf\u5730\u5728\u4e00\u5b9a\u65f6\u95f4\u540e\u7ec8\u6b62\u7a0b\u5e8f\u6216\u6267\u884c\u7279\u5b9a\u64cd\u4f5c\u3002\u5b9a\u65f6\u5668\u662f\u4e00\u79cd\u7ebf\u7a0b\uff0c\u5b83\u5141\u8bb8\u4f60\u5728\u4e00\u6bb5\u65f6\u95f4\u540e\u6267\u884c\u4e00\u4e2a\u51fd\u6570\u3002\u4f7f\u7528\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<\/p>\n<ol>\n<li>\n<p><strong>\u4f7f\u7528 <code>time<\/code> \u6a21\u5757\u7684 <code>sleep()<\/code> \u65b9\u6cd5<\/strong><\/p>\n<\/p>\n<p><p><code>time.sleep()<\/code> \u662f\u4e00\u79cd\u7b80\u5355\u7684\u65b9\u5f0f\u6765\u6682\u505c\u7a0b\u5e8f\u7684\u6267\u884c\u3002\u901a\u8fc7\u8c03\u7528 <code>time.sleep(seconds)<\/code>\uff0c\u7a0b\u5e8f\u5c06\u6682\u505c\u6267\u884c\u6307\u5b9a\u7684\u79d2\u6570\u3002\u8fd9\u5728\u9700\u8981\u5728\u6267\u884c\u64cd\u4f5c\u4e4b\u95f4\u52a0\u5165\u5ef6\u8fdf\u65f6\u975e\u5e38\u6709\u7528\u3002\u7136\u800c\uff0c\u8fd9\u5e76\u4e0d\u662f\u4e25\u683c\u7684\u201c\u7ec8\u6b62\u201d\uff0c\u800c\u662f\u6682\u505c\u3002<\/p>\n<\/p>\n<\/li>\n<li>\n<p><strong>\u4f7f\u7528 <code>datetime<\/code> \u6a21\u5757\u8fdb\u884c\u65f6\u95f4\u6bd4\u8f83<\/strong><\/p>\n<\/p>\n<p><p>\u901a\u8fc7\u83b7\u53d6\u5f53\u524d\u65f6\u95f4\u5e76\u5c06\u5176\u4e0e\u76ee\u6807\u7ed3\u675f\u65f6\u95f4\u8fdb\u884c\u6bd4\u8f83\uff0c\u53ef\u4ee5\u5728\u8fbe\u5230\u6307\u5b9a\u65f6\u95f4\u65f6\u7ec8\u6b62\u7a0b\u5e8f\u3002<code>datetime<\/code> \u6a21\u5757\u63d0\u4f9b\u4e86\u7075\u6d3b\u7684\u65f6\u95f4\u548c\u65e5\u671f\u64cd\u4f5c\u65b9\u6cd5\u3002<\/p>\n<\/p>\n<\/li>\n<li>\n<p><strong>\u4f7f\u7528\u5b9a\u65f6\u5668<\/strong><\/p>\n<\/p>\n<p><p><code>threading<\/code> \u6a21\u5757\u4e2d\u7684 <code>Timer<\/code> \u7c7b\u63d0\u4f9b\u4e86\u4e00\u79cd\u521b\u5efa\u5b9a\u65f6\u5668\u7684\u65b9\u6cd5\u3002\u5b9a\u65f6\u5668\u5728\u6307\u5b9a\u7684\u65f6\u95f4\u540e\u6267\u884c\u4e00\u4e2a\u51fd\u6570\uff0c\u8fd9\u5728\u9700\u8981\u5728\u4e00\u6bb5\u65f6\u95f4\u540e\u81ea\u52a8\u6267\u884c\u67d0\u4e2a\u64cd\u4f5c\u65f6\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n<\/li>\n<li>\n<p><strong>\u5904\u7406\u8d85\u65f6\u5f02\u5e38<\/strong><\/p>\n<\/p>\n<p><p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4f8b\u5982\u7f51\u7edc\u8bf7\u6c42\u6216\u7b49\u5f85\u5916\u90e8\u8f93\u5165\u65f6\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u8d85\u65f6\u3002\u5f53\u64cd\u4f5c\u8d85\u8fc7\u6307\u5b9a\u65f6\u95f4\u65f6\uff0c\u53ef\u4ee5\u5f15\u53d1\u5f02\u5e38\u8fdb\u884c\u5904\u7406\u3002<\/p>\n<\/p>\n<\/li>\n<\/ol>\n<p><p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u6df1\u5165\u63a2\u8ba8\u6bcf\u79cd\u65b9\u6cd5\u7684\u5177\u4f53\u5b9e\u73b0\u65b9\u5f0f\u4e0e\u5e94\u7528\u573a\u666f\u3002<\/p>\n<\/p>\n<p><h2>\u4e00\u3001\u4f7f\u7528 <code>TIME<\/code> \u6a21\u5757\u7684 <code>SLEEP()<\/code> \u65b9\u6cd5<\/h2>\n<\/p>\n<p><p><code>time.sleep()<\/code> \u65b9\u6cd5\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u5de5\u5177\uff0c\u7528\u4e8e\u5728\u7a0b\u5e8f\u4e2d\u5f15\u5165\u6682\u505c\u3002\u8fd9\u5728\u9700\u8981\u9650\u5236\u7a0b\u5e8f\u6267\u884c\u901f\u5ea6\u6216\u63a7\u5236\u64cd\u4f5c\u987a\u5e8f\u65f6\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n<p><h3>1.1 <code>time.sleep()<\/code> \u7684\u57fa\u672c\u7528\u6cd5<\/h3>\n<\/p>\n<p><p><code>time.sleep()<\/code> \u65b9\u6cd5\u7684\u4f7f\u7528\u975e\u5e38\u76f4\u63a5\uff0c\u901a\u8fc7\u4f20\u9012\u4e00\u4e2a\u4ee5\u79d2\u4e3a\u5355\u4f4d\u7684\u6d6e\u70b9\u6570\u53c2\u6570\uff0c\u7a0b\u5e8f\u5c06\u6682\u505c\u6307\u5b9a\u7684\u79d2\u6570\u3002\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import time<\/p>\n<p>print(&quot;Start&quot;)<\/p>\n<p>time.sleep(5)  # \u6682\u505c5\u79d2<\/p>\n<p>print(&quot;End&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u7a0b\u5e8f\u5c06\u4f1a\u6253\u5370\u201cStart\u201d\uff0c\u7136\u540e\u6682\u505c5\u79d2\uff0c\u63a5\u7740\u6253\u5370\u201cEnd\u201d\u3002<\/p>\n<\/p>\n<p><h3>1.2 \u5e94\u7528\u573a\u666f<\/h3>\n<\/p>\n<ul>\n<li>\n<p><strong>\u63a7\u5236\u5faa\u73af\u7684\u6267\u884c\u901f\u5ea6<\/strong>\uff1a\u5728\u5faa\u73af\u4e2d\u4f7f\u7528 <code>time.sleep()<\/code> \u53ef\u4ee5\u9632\u6b62\u7a0b\u5e8f\u8fc7\u5feb\u6267\u884c\u3002\u4f8b\u5982\uff0c\u5728\u4e00\u4e2a\u722c\u866b\u7a0b\u5e8f\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7 <code>time.sleep()<\/code> \u63a7\u5236\u8bf7\u6c42\u9891\u7387\uff0c\u907f\u514d\u88ab\u76ee\u6807\u670d\u52a1\u5668\u5c01\u7981\u3002<\/p>\n<\/p>\n<\/li>\n<li>\n<p><strong>\u5b9e\u73b0\u7b80\u5355\u7684\u5012\u8ba1\u65f6<\/strong>\uff1a\u901a\u8fc7 <code>time.sleep()<\/code> \u53ef\u4ee5\u5b9e\u73b0\u4e00\u4e2a\u7b80\u5355\u7684\u5012\u8ba1\u65f6\u529f\u80fd\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import time<\/p>\n<p>countdown = 10<\/p>\n<p>while countdown &gt; 0:<\/p>\n<p>    print(f&quot;Countdown: {countdown}&quot;)<\/p>\n<p>    time.sleep(1)<\/p>\n<p>    countdown -= 1<\/p>\n<p>print(&quot;Time&#39;s up!&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e0a\u8ff0\u4ee3\u7801\u5b9e\u73b0\u4e86\u4e00\u4e2a\u4ece10\u52300\u7684\u5012\u8ba1\u65f6\uff0c\u6bcf\u79d2\u66f4\u65b0\u4e00\u6b21\u3002<\/p>\n<\/p>\n<\/li>\n<\/ul>\n<p><h2>\u4e8c\u3001\u4f7f\u7528 <code>DATETIME<\/code> \u6a21\u5757\u8fdb\u884c\u65f6\u95f4\u6bd4\u8f83<\/h2>\n<\/p>\n<p><p><code>datetime<\/code> \u6a21\u5757\u5141\u8bb8\u6211\u4eec\u83b7\u53d6\u5f53\u524d\u65f6\u95f4\uff0c\u5e76\u8fdb\u884c\u7075\u6d3b\u7684\u65f6\u95f4\u548c\u65e5\u671f\u64cd\u4f5c\u3002\u8fd9\u5bf9\u4e8e\u9700\u8981\u7cbe\u786e\u63a7\u5236\u7a0b\u5e8f\u6267\u884c\u65f6\u95f4\u7684\u573a\u666f\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n<p><h3>2.1 \u83b7\u53d6\u5f53\u524d\u65f6\u95f4<\/h3>\n<\/p>\n<p><p>\u901a\u8fc7 <code>datetime.datetime.now()<\/code> \u53ef\u4ee5\u83b7\u53d6\u5f53\u524d\u7684\u65e5\u671f\u548c\u65f6\u95f4\u3002\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from datetime import datetime<\/p>\n<p>current_time = datetime.now()<\/p>\n<p>print(&quot;Current Time:&quot;, current_time)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>2.2 \u65f6\u95f4\u6bd4\u8f83<\/h3>\n<\/p>\n<p><p>\u901a\u8fc7\u5c06\u5f53\u524d\u65f6\u95f4\u4e0e\u76ee\u6807\u65f6\u95f4\u8fdb\u884c\u6bd4\u8f83\uff0c\u53ef\u4ee5\u5728\u7279\u5b9a\u65f6\u95f4\u70b9\u89e6\u53d1\u67d0\u4e9b\u64cd\u4f5c\u3002\u5982\u4e0b\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u5b9e\u73b0\u4e00\u4e2a\u7b80\u5355\u7684\u8ba1\u65f6\u5668\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from datetime import datetime, timedelta<\/p>\n<p>end_time = datetime.now() + timedelta(seconds=10)  # \u8bbe\u7f6e10\u79d2\u540e\u7684\u7ed3\u675f\u65f6\u95f4<\/p>\n<p>while datetime.now() &lt; end_time:<\/p>\n<p>    print(&quot;Running...&quot;)<\/p>\n<p>    time.sleep(1)<\/p>\n<p>print(&quot;Time&#39;s up!&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u7a0b\u5e8f\u5c06\u4f1a\u6bcf\u79d2\u6253\u5370\u4e00\u6b21\u201cRunning&#8230;\u201d\uff0c\u76f4\u81f3\u5f53\u524d\u65f6\u95f4\u8d85\u8fc7 <code>end_time<\/code>\u3002<\/p>\n<\/p>\n<p><h3>2.3 \u5e94\u7528\u573a\u666f<\/h3>\n<\/p>\n<ul>\n<li>\n<p><strong>\u5b9e\u73b0\u7cbe\u786e\u7684\u5b9a\u65f6\u5668<\/strong>\uff1a\u901a\u8fc7 <code>datetime<\/code> \u6a21\u5757\uff0c\u53ef\u4ee5\u5b9e\u73b0\u7cbe\u786e\u5230\u6beb\u79d2\u7684\u5b9a\u65f6\u5668\uff0c\u8fd9\u5728\u9700\u8981\u9ad8\u7cbe\u5ea6\u5b9a\u65f6\u7684\u573a\u5408\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n<\/li>\n<li>\n<p><strong>\u8ba1\u7b97\u65f6\u95f4\u5dee<\/strong>\uff1a\u901a\u8fc7 <code>datetime<\/code> \u53ef\u4ee5\u65b9\u4fbf\u5730\u8ba1\u7b97\u4e24\u4e2a\u65f6\u95f4\u70b9\u4e4b\u95f4\u7684\u5dee\u503c\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from datetime import datetime<\/p>\n<p>start_time = datetime.now()<\/p>\n<h2><strong>\u6267\u884c\u67d0\u4e9b\u64cd\u4f5c<\/strong><\/h2>\n<p>end_time = datetime.now()<\/p>\n<p>duration = end_time - start_time<\/p>\n<p>print(&quot;Operation duration:&quot;, duration)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e0a\u8ff0\u4ee3\u7801\u53ef\u4ee5\u7528\u4e8e\u8ba1\u7b97\u7a0b\u5e8f\u67d0\u6bb5\u4ee3\u7801\u7684\u6267\u884c\u65f6\u95f4\u3002<\/p>\n<\/p>\n<\/li>\n<\/ul>\n<p><h2>\u4e09\u3001\u4f7f\u7528\u5b9a\u65f6\u5668\uff08TIMER\uff09<\/h2>\n<\/p>\n<p><p><code>threading<\/code> \u6a21\u5757\u4e2d\u7684 <code>Timer<\/code> \u7c7b\u53ef\u4ee5\u5728\u6307\u5b9a\u65f6\u95f4\u540e\u6267\u884c\u4e00\u4e2a\u51fd\u6570\uff0c\u8fd9\u662f\u5b9e\u73b0\u81ea\u52a8\u5316\u64cd\u4f5c\u7684\u6709\u529b\u5de5\u5177\u3002<\/p>\n<\/p>\n<p><h3>3.1 \u57fa\u672c\u7528\u6cd5<\/h3>\n<\/p>\n<p><p><code>Timer<\/code> \u7c7b\u7684\u4f7f\u7528\u9700\u8981\u5bfc\u5165 <code>threading<\/code> \u6a21\u5757\uff0c\u5e76\u521b\u5efa\u4e00\u4e2a <code>Timer<\/code> \u5bf9\u8c61\u3002\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from threading import Timer<\/p>\n<p>def say_hello():<\/p>\n<p>    print(&quot;Hello, world!&quot;)<\/p>\n<h2><strong>\u521b\u5efa\u4e00\u4e2a\u5b9a\u65f6\u5668\uff0c5\u79d2\u540e\u6267\u884csay_hello\u51fd\u6570<\/strong><\/h2>\n<p>timer = Timer(5.0, say_hello)<\/p>\n<p>timer.start()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c<code>say_hello()<\/code> \u51fd\u6570\u5c06\u57285\u79d2\u540e\u88ab\u8c03\u7528\u3002<\/p>\n<\/p>\n<p><h3>3.2 \u53d6\u6d88\u5b9a\u65f6\u5668<\/h3>\n<\/p>\n<p><p>\u5728\u5b9a\u65f6\u5668\u542f\u52a8\u540e\uff0c\u5982\u679c\u9700\u8981\u53d6\u6d88\u64cd\u4f5c\uff0c\u53ef\u4ee5\u8c03\u7528\u5b9a\u65f6\u5668\u5bf9\u8c61\u7684 <code>cancel()<\/code> \u65b9\u6cd5\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">timer.cancel()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>3.3 \u5e94\u7528\u573a\u666f<\/h3>\n<\/p>\n<ul>\n<li>\n<p><strong>\u81ea\u52a8\u5316\u4efb\u52a1\u8c03\u5ea6<\/strong>\uff1a\u53ef\u4ee5\u4f7f\u7528 <code>Timer<\/code> \u5b9e\u73b0\u67d0\u4e9b\u4efb\u52a1\u7684\u81ea\u52a8\u5316\u8c03\u5ea6\uff0c\u4f8b\u5982\u5728\u56fa\u5b9a\u65f6\u95f4\u540e\u81ea\u52a8\u6e05\u7406\u7f13\u5b58\u3001\u53d1\u9001\u63d0\u9192\u7b49\u3002<\/p>\n<\/p>\n<\/li>\n<li>\n<p><strong>\u9632\u6b62\u6b7b\u9501<\/strong>\uff1a\u5728\u591a\u7ebf\u7a0b\u7f16\u7a0b\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>Timer<\/code> \u8bbe\u7f6e\u4e00\u4e2a\u8d85\u65f6\u65f6\u95f4\uff0c\u4ee5\u9632\u6b62\u7a0b\u5e8f\u9677\u5165\u6b7b\u9501\u3002<\/p>\n<\/p>\n<\/li>\n<\/ul>\n<p><h2>\u56db\u3001\u5904\u7406\u8d85\u65f6\u5f02\u5e38<\/h2>\n<\/p>\n<p><p>\u5728\u67d0\u4e9b\u573a\u5408\u4e0b\uff0c\u5982\u7f51\u7edc\u8bf7\u6c42\u3001\u7b49\u5f85\u5916\u90e8\u8f93\u5165\u7b49\uff0c\u53ef\u80fd\u9700\u8981\u8bbe\u7f6e\u8d85\u65f6\u3002\u5982\u679c\u64cd\u4f5c\u672a\u5728\u6307\u5b9a\u65f6\u95f4\u5185\u5b8c\u6210\uff0c\u53ef\u4ee5\u5f15\u53d1\u5f02\u5e38\u8fdb\u884c\u5904\u7406\u3002<\/p>\n<\/p>\n<p><h3>4.1 \u4f7f\u7528 <code>signal<\/code> \u6a21\u5757\u8bbe\u7f6e\u8d85\u65f6<\/h3>\n<\/p>\n<p><p>\u5bf9\u4e8e\u6267\u884c\u65f6\u95f4\u8f83\u957f\u7684\u64cd\u4f5c\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>signal<\/code> \u6a21\u5757\u6765\u8bbe\u7f6e\u8d85\u65f6\u4fe1\u53f7\u3002\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import signal<\/p>\n<p>def handler(signum, frame):<\/p>\n<p>    r<a href=\"https:\/\/docs.pingcode.com\/blog\/59162.html\" target=\"_blank\">AI<\/a>se TimeoutError(&quot;Operation timed out!&quot;)<\/p>\n<p>signal.signal(signal.SIGALRM, handler)<\/p>\n<p>signal.alarm(5)  # \u8bbe\u7f6e5\u79d2\u8d85\u65f6<\/p>\n<p>try:<\/p>\n<p>    # \u6267\u884c\u957f\u65f6\u95f4\u64cd\u4f5c<\/p>\n<p>    pass<\/p>\n<p>except TimeoutError as e:<\/p>\n<p>    print(e)<\/p>\n<p>finally:<\/p>\n<p>    signal.alarm(0)  # \u53d6\u6d88\u4fe1\u53f7<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u5982\u679c\u64cd\u4f5c\u8d85\u8fc75\u79d2\uff0c\u5c06\u5f15\u53d1 <code>TimeoutError<\/code> \u5f02\u5e38\u3002<\/p>\n<\/p>\n<p><h3>4.2 \u5e94\u7528\u573a\u666f<\/h3>\n<\/p>\n<ul>\n<li>\n<p><strong>\u7f51\u7edc\u8bf7\u6c42\u8d85\u65f6<\/strong>\uff1a\u5728\u8fdb\u884c\u7f51\u7edc\u8bf7\u6c42\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u8d85\u65f6\u8bbe\u7f6e\u6765\u907f\u514d\u7a0b\u5e8f\u957f\u65f6\u95f4\u7b49\u5f85\u65e0\u54cd\u5e94\u7684\u670d\u52a1\u5668\u3002<\/p>\n<\/p>\n<\/li>\n<li>\n<p><strong>\u7b49\u5f85\u7528\u6237\u8f93\u5165<\/strong>\uff1a\u5728\u67d0\u4e9b\u4ea4\u4e92\u5f0f\u7a0b\u5e8f\u4e2d\uff0c\u53ef\u80fd\u9700\u8981\u5728\u7528\u6237\u957f\u65f6\u95f4\u672a\u54cd\u5e94\u65f6\u6267\u884c\u9ed8\u8ba4\u64cd\u4f5c\u6216\u9000\u51fa\u3002<\/p>\n<\/p>\n<\/li>\n<\/ul>\n<p><p>\u7efc\u4e0a\u6240\u8ff0\uff0cPython \u63d0\u4f9b\u4e86\u591a\u79cd\u5b9e\u73b0\u65f6\u95f4\u7ec8\u6b62\u7684\u65b9\u6cd5\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6848\u3002\u5728\u5b9e\u8df5\u4e2d\uff0c\u5408\u7406\u4f7f\u7528\u8fd9\u4e9b\u5de5\u5177\u53ef\u4ee5\u63d0\u9ad8\u7a0b\u5e8f\u7684\u5065\u58ee\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6765\u7ec8\u6b62\u7a0b\u5e8f\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528<code>threading.Timer<\/code>\u7c7b\u6765\u521b\u5efa\u4e00\u4e2a\u5b9a\u65f6\u5668\uff0c\u8fd9\u6837\u53ef\u4ee5\u5728\u8bbe\u5b9a\u7684\u65f6\u95f4\u540e\u6267\u884c\u4e00\u4e2a\u7279\u5b9a\u7684\u51fd\u6570\uff0c\u4ee5\u5b9e\u73b0\u7a0b\u5e8f\u7684\u7ec8\u6b62\u3002\u4f8b\u5982\uff0c\u4f60\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a\u51fd\u6570\u6765\u7ec8\u6b62\u7a0b\u5e8f\uff0c\u5e76\u5c06\u5176\u4f20\u9012\u7ed9\u5b9a\u65f6\u5668\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u4ee3\u7801\uff1a  <\/p>\n<pre><code class=\"language-python\">import threading\nimport sys\n\ndef terminate_program():\n    print(&quot;\u7a0b\u5e8f\u5df2\u7ec8\u6b62\u3002&quot;)\n    sys.exit()\n\n# \u8bbe\u7f6e\u5b9a\u65f6\u5668\uff0c5\u79d2\u540e\u6267\u884c terminate_program \u51fd\u6570\ntimer = threading.Timer(5.0, terminate_program)\ntimer.start()\n\n# \u4e3b\u7a0b\u5e8f\u903b\u8f91\nwhile True:\n    print(&quot;\u7a0b\u5e8f\u8fd0\u884c\u4e2d...&quot;)\n<\/code><\/pre>\n<p>\u8fd9\u4e2a\u4ee3\u7801\u5c06\u57285\u79d2\u540e\u81ea\u52a8\u7ec8\u6b62\u7a0b\u5e8f\u3002<\/p>\n<p><strong>\u5728Python\u4e2d\u5982\u4f55\u8bbe\u7f6e\u8d85\u65f6\u6765\u9650\u5236\u67d0\u4e2a\u64cd\u4f5c\u7684\u6267\u884c\u65f6\u95f4\uff1f<\/strong><br \/>\u53ef\u4ee5\u4f7f\u7528<code>signal<\/code>\u6a21\u5757\u6765\u4e3a\u67d0\u4e2a\u64cd\u4f5c\u8bbe\u7f6e\u8d85\u65f6\u3002\u5728Unix\u7cfb\u7edf\u4e0a\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u8bbe\u5b9a\u4e00\u4e2a\u4fe1\u53f7\u5904\u7406\u5668\u6765\u5b9e\u73b0\u8d85\u65f6\u529f\u80fd\u3002\u4ee5\u4e0b\u662f\u76f8\u5173\u7684\u4ee3\u7801\u793a\u4f8b\uff1a  <\/p>\n<pre><code class=\"language-python\">import signal\n\ndef handler(signum, frame):\n    raise TimeoutError(&quot;\u64cd\u4f5c\u8d85\u65f6&quot;)\n\n# \u8bbe\u7f6e\u8d85\u65f6\u4e3a5\u79d2\nsignal.signal(signal.SIGALRM, handler)\nsignal.alarm(5)\n\ntry:\n    # \u6267\u884c\u67d0\u4e2a\u53ef\u80fd\u4f1a\u8d85\u65f6\u7684\u64cd\u4f5c\n    result = long_running_function()\nexcept TimeoutError:\n    print(&quot;\u6267\u884c\u8d85\u65f6\uff0c\u64cd\u4f5c\u88ab\u7ec8\u6b62\u3002&quot;)\nfinally:\n    signal.alarm(0)  # \u53d6\u6d88\u5b9a\u65f6\u5668\n<\/code><\/pre>\n<p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u5982\u679c<code>long_running_function<\/code>\u7684\u6267\u884c\u65f6\u95f4\u8d85\u8fc75\u79d2\uff0c\u7a0b\u5e8f\u5c06\u4f1a\u629b\u51fa\u4e00\u4e2a\u8d85\u65f6\u5f02\u5e38\u3002<\/p>\n<p><strong>\u5982\u4f55\u5728Python\u4e2d\u4f7f\u7528<code>atexit<\/code>\u6a21\u5757\u4f18\u96c5\u5730\u7ec8\u6b62\u7a0b\u5e8f\uff1f<\/strong><br \/><code>atexit<\/code>\u6a21\u5757\u5141\u8bb8\u4f60\u6ce8\u518c\u5728\u7a0b\u5e8f\u6b63\u5e38\u9000\u51fa\u65f6\u9700\u8981\u6267\u884c\u7684\u6e05\u7406\u51fd\u6570\u3002\u8fd9\u6837\u53ef\u4ee5\u786e\u4fdd\u5728\u7a0b\u5e8f\u7ed3\u675f\u65f6\u6267\u884c\u7279\u5b9a\u7684\u64cd\u4f5c\uff0c\u6bd4\u5982\u5173\u95ed\u6587\u4ef6\u6216\u91ca\u653e\u8d44\u6e90\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff1a  <\/p>\n<pre><code class=\"language-python\">import atexit\n\ndef cleanup():\n    print(&quot;\u7a0b\u5e8f\u6b63\u5728\u9000\u51fa\uff0c\u8fdb\u884c\u6e05\u7406\u64cd\u4f5c...&quot;)\n\natexit.register(cleanup)\n\n# \u4e3b\u7a0b\u5e8f\u903b\u8f91\nprint(&quot;\u7a0b\u5e8f\u8fd0\u884c\u4e2d...&quot;)\n<\/code><\/pre>\n<p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5f53\u7a0b\u5e8f\u6b63\u5e38\u9000\u51fa\u65f6\uff0c\u4f1a\u81ea\u52a8\u8c03\u7528<code>cleanup<\/code>\u51fd\u6570\uff0c\u8fdb\u884c\u5fc5\u8981\u7684\u6e05\u7406\u5de5\u4f5c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528time\u6a21\u5757\u7684time.sleep()\u65b9\u6cd5\u8bbe\u7f6e\u65f6\u95f4\u7ec8\u6b62\uff0c\u4f7f\u7528datetime\u6a21\u5757 [&hellip;]","protected":false},"author":3,"featured_media":986989,"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\/986977"}],"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=986977"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/986977\/revisions"}],"predecessor-version":[{"id":986993,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/986977\/revisions\/986993"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/986989"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=986977"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=986977"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=986977"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}