{"id":1094321,"date":"2025-01-08T14:39:55","date_gmt":"2025-01-08T06:39:55","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1094321.html"},"modified":"2025-01-08T14:39:57","modified_gmt":"2025-01-08T06:39:57","slug":"python%e5%a6%82%e4%bd%95%e6%af%8f%e9%9a%94%e4%ba%94%e4%b8%aa%e6%95%b0%e5%be%aa%e7%8e%af-2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1094321.html","title":{"rendered":"python\u5982\u4f55\u6bcf\u9694\u4e94\u4e2a\u6570\u5faa\u73af"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/24210508\/571d8fc0-9a08-40d0-a95e-bd665ad9aa94.webp\" alt=\"python\u5982\u4f55\u6bcf\u9694\u4e94\u4e2a\u6570\u5faa\u73af\" \/><\/p>\n<p><p> <strong>\u5728Python\u4e2d\uff0c\u6bcf\u9694\u4e94\u4e2a\u6570\u8fdb\u884c\u5faa\u73af\u7684\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528range\u51fd\u6570\u3001\u4f7f\u7528enumerate\u51fd\u6570\u3001\u4ee5\u53ca\u901a\u8fc7\u5217\u8868\u5207\u7247\u7b49\u65b9\u5f0f\u3002<\/strong> \u4f7f\u7528range\u51fd\u6570\u53ef\u4ee5\u65b9\u4fbf\u5730\u6307\u5b9a\u6b65\u957f\u4e3a5\uff0cenumerate\u51fd\u6570\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u83b7\u53d6\u7d22\u5f15\uff0c\u5217\u8868\u5207\u7247\u5219\u53ef\u4ee5\u76f4\u63a5\u83b7\u53d6\u6bcf\u9694\u4e94\u4e2a\u6570\u7684\u5b50\u5217\u8868\u3002\u4ee5\u4e0b\u662f\u8be6\u7ec6\u4ecb\u7ecd\uff1a<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u4f7f\u7528range\u51fd\u6570<\/h3>\n<\/p>\n<p><p>\u4f7f\u7528range\u51fd\u6570\u53ef\u4ee5\u65b9\u4fbf\u5730\u751f\u6210\u4e00\u4e2a\u6b65\u957f\u4e3a5\u7684\u6570\u5217\uff0c\u4ece\u800c\u5b9e\u73b0\u6bcf\u9694\u4e94\u4e2a\u6570\u8fdb\u884c\u5faa\u73af\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">for i in range(0, 100, 5):<\/p>\n<p>    print(i)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c<code>range(0, 100, 5)<\/code>\u751f\u6210\u4e86\u4e00\u4e2a\u4ece0\u523099\u7684\u6570\u5217\uff0c\u6b65\u957f\u4e3a5\u3002\u56e0\u6b64\uff0c\u8f93\u51fa\u7684\u6570\u5217\u4e3a0, 5, 10, 15, &#8230;, 95\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u4f7f\u7528enumerate\u51fd\u6570<\/h3>\n<\/p>\n<p><p>enumerate\u51fd\u6570\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u83b7\u53d6\u5217\u8868\u7684\u7d22\u5f15\uff0c\u5e76\u6839\u636e\u7d22\u5f15\u8fdb\u884c\u64cd\u4f5c\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">numbers = list(range(100))<\/p>\n<p>for idx, num in enumerate(numbers):<\/p>\n<p>    if idx % 5 == 0:<\/p>\n<p>        print(num)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u751f\u6210\u4e86\u4e00\u4e2a\u5305\u542b0\u523099\u7684\u5217\u8868\uff0c\u901a\u8fc7enumerate\u83b7\u53d6\u7d22\u5f15\u548c\u5143\u7d20\uff0c\u5e76\u4f7f\u7528<code>if idx % 5 == 0<\/code>\u6765\u5224\u65ad\u662f\u5426\u6bcf\u9694\u4e94\u4e2a\u6570\u8f93\u51fa\u4e00\u6b21\u3002<\/p>\n<\/p>\n<p><h3>\u4e09\u3001\u4f7f\u7528\u5217\u8868\u5207\u7247<\/h3>\n<\/p>\n<p><p>\u901a\u8fc7\u5217\u8868\u5207\u7247\uff0c\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u83b7\u53d6\u6bcf\u9694\u4e94\u4e2a\u6570\u7684\u5b50\u5217\u8868\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">numbers = list(range(100))<\/p>\n<p>every_five = numbers[::5]<\/p>\n<p>for num in every_five:<\/p>\n<p>    print(num)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c<code>numbers[::5]<\/code>\u751f\u6210\u4e86\u4e00\u4e2a\u6bcf\u9694\u4e94\u4e2a\u6570\u7684\u5b50\u5217\u8868\uff0c\u7136\u540e\u518d\u5bf9\u8fd9\u4e2a\u5b50\u5217\u8868\u8fdb\u884c\u5faa\u73af\u3002<\/p>\n<\/p>\n<p><h3>\u56db\u3001\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u4f7f\u7528\u573a\u666f<\/h3>\n<\/p>\n<p><h4>\u6570\u636e\u5904\u7406\u4e2d\u7684\u5e94\u7528<\/h4>\n<\/p>\n<p><p>\u5728\u6570\u636e\u5904\u7406\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u6bcf\u9694\u56fa\u5b9a\u6b65\u957f\u63d0\u53d6\u6570\u636e\u3002\u4f8b\u5982\uff0c\u5728\u65f6\u95f4\u5e8f\u5217\u6570\u636e\u5206\u6790\u4e2d\uff0c\u6bcf\u96945\u5206\u949f\u63d0\u53d6\u4e00\u6b21\u6570\u636e\u70b9\uff0c\u53ef\u4ee5\u4f7f\u7528\u7c7b\u4f3c\u7684\u65b9\u6cd5\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<h2><strong>\u751f\u6210\u65f6\u95f4\u5e8f\u5217\u6570\u636e<\/strong><\/h2>\n<p>time_series = pd.date_range(start=&#39;1\/1\/2022&#39;, periods=120, freq=&#39;T&#39;)<\/p>\n<p>data = range(120)<\/p>\n<p>df = pd.DataFrame({&#39;Timestamp&#39;: time_series, &#39;Value&#39;: data})<\/p>\n<h2><strong>\u6bcf\u96945\u5206\u949f\u63d0\u53d6\u4e00\u6b21\u6570\u636e\u70b9<\/strong><\/h2>\n<p>filtered_df = df.iloc[::5]<\/p>\n<p>print(filtered_df)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u751f\u6210\u4e86\u4e00\u4e2a\u6bcf\u5206\u949f\u7684\u6570\u636e\u70b9\uff0c\u901a\u8fc7<code>df.iloc[::5]<\/code>\u6bcf\u9694\u4e94\u5206\u949f\u63d0\u53d6\u4e00\u6b21\u6570\u636e\u70b9\uff0c\u751f\u6210\u4e00\u4e2a\u65b0\u7684DataFrame\u3002<\/p>\n<\/p>\n<p><h4>\u786c\u4ef6\u8d44\u6e90\u76d1\u63a7<\/h4>\n<\/p>\n<p><p>\u5728\u786c\u4ef6\u8d44\u6e90\u76d1\u63a7\u4e2d\uff0c\u6211\u4eec\u53ef\u80fd\u9700\u8981\u6bcf\u9694\u56fa\u5b9a\u65f6\u95f4\u95f4\u9694\u68c0\u67e5\u8d44\u6e90\u4f7f\u7528\u60c5\u51b5\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import psutil<\/p>\n<p>import time<\/p>\n<p>for i in range(0, 100, 5):<\/p>\n<p>    cpu_usage = psutil.cpu_percent(interval=1)<\/p>\n<p>    memory_usage = psutil.virtual_memory().percent<\/p>\n<p>    print(f&quot;Time: {i}s, CPU Usage: {cpu_usage}%, Memory Usage: {memory_usage}%&quot;)<\/p>\n<p>    time.sleep(4)  # W<a href=\"https:\/\/docs.pingcode.com\/blog\/59162.html\" target=\"_blank\">AI<\/a>t for 4 seconds to make the total wait time 5 seconds<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u6bcf\u96945\u79d2\u949f\u68c0\u67e5\u4e00\u6b21CPU\u548c\u5185\u5b58\u7684\u4f7f\u7528\u60c5\u51b5\u3002<\/p>\n<\/p>\n<p><h3>\u4e94\u3001\u603b\u7ed3<\/h3>\n<\/p>\n<p><p><strong>\u5728Python\u4e2d\uff0c\u6bcf\u9694\u4e94\u4e2a\u6570\u8fdb\u884c\u5faa\u73af\u7684\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528range\u51fd\u6570\u3001enumerate\u51fd\u6570\u3001\u4ee5\u53ca\u901a\u8fc7\u5217\u8868\u5207\u7247\u7b49\u65b9\u5f0f\u3002<\/strong> \u8fd9\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u5e94\u7528\u4e8e\u4e0d\u540c\u7684\u573a\u666f\uff0c\u5982\u6570\u636e\u5904\u7406\u3001\u786c\u4ef6\u8d44\u6e90\u76d1\u63a7\u7b49\uff0c\u5e2e\u52a9\u6211\u4eec\u9ad8\u6548\u5730\u5b8c\u6210\u4efb\u52a1\u3002\u901a\u8fc7\u5408\u7406\u9009\u62e9\u65b9\u6cd5\uff0c\u53ef\u4ee5\u4f7f\u4ee3\u7801\u66f4\u7b80\u6d01\u3001\u9ad8\u6548\uff0c\u63d0\u5347\u5de5\u4f5c\u6548\u7387\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u5b9e\u73b0\u6bcf\u9694\u4e94\u4e2a\u6570\u8fdb\u884c\u5faa\u73af\u7684\u529f\u80fd\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528<code>for<\/code>\u5faa\u73af\u914d\u5408<code>range()<\/code>\u51fd\u6570\u6765\u5b9e\u73b0\u6bcf\u9694\u4e94\u4e2a\u6570\u8fdb\u884c\u5faa\u73af\u3002\u5177\u4f53\u7684\u5b9e\u73b0\u65b9\u6cd5\u662f\u901a\u8fc7\u8bbe\u7f6e<code>range()<\/code>\u51fd\u6570\u7684\u6b65\u957f\u4e3a5\u6765\u8fbe\u5230\u76ee\u7684\u3002\u4f8b\u5982\uff0c<code>for i in range(0, 100, 5)<\/code>\u5c06\u4ece0\u5f00\u59cb\uff0c\u6bcf\u6b21\u589e\u52a05\uff0c\u76f4\u523099\u4e3a\u6b62\u3002\u8fd9\u6837\u53ef\u4ee5\u8f7b\u677e\u83b7\u53d6\u6bcf\u9694\u4e94\u4e2a\u6570\u7684\u5e8f\u5217\u3002<\/p>\n<p><strong>\u662f\u5426\u53ef\u4ee5\u5728\u5faa\u73af\u4e2d\u5bf9\u6bcf\u9694\u4e94\u4e2a\u6570\u8fdb\u884c\u7279\u5b9a\u7684\u64cd\u4f5c\uff1f<\/strong><br \/>\u5f53\u7136\u53ef\u4ee5\u3002\u5728\u6bcf\u6b21\u5faa\u73af\u65f6\uff0c\u60a8\u53ef\u4ee5\u6dfb\u52a0\u4efb\u4f55\u60a8\u60f3\u8981\u7684\u64cd\u4f5c\uff0c\u4f8b\u5982\u6253\u5370\u3001\u8ba1\u7b97\u6216\u5b58\u50a8\u7ed3\u679c\u3002\u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u5728\u5faa\u73af\u4e2d\u4f7f\u7528<code>if<\/code>\u8bed\u53e5\u6765\u5bf9\u5f53\u524d\u6570\u8fdb\u884c\u7279\u5b9a\u7684\u64cd\u4f5c\uff0c\u53ea\u6709\u5f53<code>i<\/code>\u662f5\u7684\u500d\u6570\u65f6\u624d\u6267\u884c\u7279\u5b9a\u4ee3\u7801\u3002<\/p>\n<p><strong>\u5982\u4f55\u5904\u7406\u5217\u8868\u4e2d\u7684\u6bcf\u9694\u4e94\u4e2a\u5143\u7d20\uff1f<\/strong><br \/>\u82e5\u8981\u5904\u7406\u5217\u8868\u4e2d\u7684\u6bcf\u9694\u4e94\u4e2a\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u5207\u7247\u6280\u672f\u3002\u901a\u8fc7<code>my_list[::5]<\/code>\u7684\u65b9\u5f0f\uff0c\u60a8\u53ef\u4ee5\u8f7b\u677e\u63d0\u53d6\u51fa\u5217\u8868\u4e2d\u7684\u6bcf\u9694\u4e94\u4e2a\u5143\u7d20\u3002\u8fd9\u79cd\u65b9\u6cd5\u975e\u5e38\u9ad8\u6548\u4e14\u7b80\u6d01\uff0c\u9002\u5408\u7528\u4e8e\u9700\u8981\u4ece\u5217\u8868\u4e2d\u83b7\u53d6\u7279\u5b9a\u5143\u7d20\u7684\u573a\u666f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u6bcf\u9694\u4e94\u4e2a\u6570\u8fdb\u884c\u5faa\u73af\u7684\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528range\u51fd\u6570\u3001\u4f7f\u7528enumerate\u51fd\u6570\u3001\u4ee5\u53ca\u901a\u8fc7\u5217\u8868\u5207\u7247 [&hellip;]","protected":false},"author":3,"featured_media":1094329,"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\/1094321"}],"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=1094321"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1094321\/revisions"}],"predecessor-version":[{"id":1094330,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1094321\/revisions\/1094330"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1094329"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1094321"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1094321"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1094321"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}