{"id":1807,"date":"2026-09-23T14:59:25","date_gmt":"2026-09-23T14:59:25","guid":{"rendered":"https:\/\/accelthinking.com\/?p=1807"},"modified":"2026-09-29T03:16:39","modified_gmt":"2026-09-29T03:16:39","slug":"python-avoid-infinite-while-loop","status":"publish","type":"post","link":"https:\/\/accelthinking.com\/zh_cn\/python-avoid-infinite-while-loop\/","title":{"rendered":"The Infinite Loop Beginners Write Most Often"},"content":{"rendered":"<style>\nhtml,body,#page{background:#f8fafc!important}.site-header,.site-footer,#masthead,#colophon,.entry-header,.post-navigation,.comments-area{display:none!important}.entry-title{display:none!important}.site-content .ast-container{max-width:100%!important;padding:0!important}.entry-content{margin:0!important;line-height:1.5!important}.site-content,#content,#primary,#main,.ast-plain-container #primary{margin:0!important;padding:0!important;background:#f8fafc}.ast-article-single{padding:0!important}\n.ati-page,.ati-page 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home\"><img loading=\"lazy\" decoding=\"async\" height=\"63\" width=\"366\" src=\"https:\/\/i0.wp.com\/accelthinking.com\/wp-content\/uploads\/2026\/06\/logo-dark-cropped-51.png?w=480&amp;quality=85&amp;ssl=1\" alt=\"Accel Thinking\"><\/a><br>\n      <input class=\"ati-menu-toggle\" id=\"ati-menu-post\" type=\"checkbox\" aria-label=\"Toggle navigation menu\"><br>\n      <label class=\"ati-menu-button\" for=\"ati-menu-post\" aria-hidden=\"true\"><span><\/span><span><\/span><span><\/span><\/label>\n<details class=\"ati-mobile-menu\">\n<summary aria-label=\"Open navigation menu\"><span><\/span><span><\/span><span><\/span><\/summary>\n<div class=\"ati-mobile-panel\"><a class=\"\" href=\"\/zh_cn\/\">\u9996\u9875<\/a><a class=\"\" href=\"\/zh_cn\/northstar\/\">\u5317\u6781\u661f<\/a><a class=\"\" href=\"\/zh_cn\/learning\/\">\u5b66\u4e60\u8def\u5f84<\/a><a class=\"active\" href=\"\/zh_cn\/resources\/\">\u8d44\u6e90\u6587\u7ae0<\/a><a class=\"\" href=\"\/zh_cn\/about\/\">\u5173\u4e8e\u6211\u4eec<\/a><a class=\"\" href=\"\/zh_cn\/contact\/\">\u8054\u7cfb\u6211\u4eec<\/a><a class=\"ati-mobile-cta\" href=\"\/zh_cn\/northstar\/\">\u5f00\u59cb\u5317\u6781\u661f\u6d4b\u8bc4<\/a><\/div>\n<\/details>\n<p>      <a class=\"ati-mobile-menu-button\" href=\"#ati-mobile-nav-post\" aria-label=\"Open navigation menu\">\u2630<\/a><\/p>\n<nav id=\"ati-mobile-nav-post\" class=\"ati-mobile-nav-panel\"><a class=\"\" href=\"\/zh_cn\/\">\u9996\u9875<\/a><a class=\"\" href=\"\/zh_cn\/northstar\/\">\u5317\u6781\u661f<\/a><a class=\"\" href=\"\/zh_cn\/learning\/\">\u5b66\u4e60\u8def\u5f84<\/a><a class=\"active\" href=\"\/zh_cn\/resources\/\">\u8d44\u6e90\u6587\u7ae0<\/a><a class=\"\" href=\"\/zh_cn\/about\/\">\u5173\u4e8e\u6211\u4eec<\/a><a class=\"\" href=\"\/zh_cn\/contact\/\">\u8054\u7cfb\u6211\u4eec<\/a><a class=\"ati-mobile-cta\" href=\"\/zh_cn\/northstar\/\">\u5f00\u59cb\u5317\u6781\u661f\u6d4b\u8bc4<\/a><a class=\"ati-mobile-close\" href=\"#\">\u5173\u95ed<\/a><\/nav>\n<nav class=\"ati-nav\"><a class=\"\" href=\"\/zh_cn\/\">\u9996\u9875<\/a><a class=\"\" href=\"\/zh_cn\/northstar\/\">\u5317\u6781\u661f<\/a><a class=\"\" href=\"\/zh_cn\/learning\/\">\u5b66\u4e60\u8def\u5f84<\/a><a class=\"active\" href=\"\/zh_cn\/resources\/\">\u8d44\u6e90\u6587\u7ae0<\/a><a class=\"\" href=\"\/zh_cn\/about\/\">\u5173\u4e8e\u6211\u4eec<\/a><a class=\"\" href=\"\/zh_cn\/contact\/\">\u8054\u7cfb\u6211\u4eec<\/a><\/nav>\n<p>      <a class=\"ati-header-cta\" href=\"\/zh_cn\/northstar\/\">\u5f00\u59cb\u5317\u6781\u661f\u6d4b\u8bc4<\/a><br>\n    <\/p><\/header>\n<p>    <main><\/main><\/p>\n<section class=\"ati-hero ati-lang-en\">\n<div>\n<p class=\"ati-label\">Python \u5b66\u4e60\u7b14\u8bb0<\/p>\n<h1 aria-label=\"\u65b0\u624b\u6700\u5bb9\u6613\u5199\u51fa\u7684\u6b7b\u5faa\u73af\">\u65b0\u624b\u6700\u5bb9\u6613\u5199\u51fa\u7684\u6b7b\u5faa\u73af<\/h1>\n<p>\u7406\u89e3 while \u5faa\u73af\u4e3a\u4f55\u505c\u4e0d\u4e0b\u6765\uff0c\u5e76\u5b66\u4f1a\u8ba9\u505c\u6b62\u6761\u4ef6\u771f\u6b63\u80fd\u591f\u53d1\u751f\u3002<\/p>\n<div class=\"ati-article-meta\"><span>\u4f5c\u8005\uff1aBerny<\/span><span>September 23, 2026<\/span><\/div>\n<\/div>\n<aside class=\"ati-side\"><strong>Condition<br>Update<br>Stop<\/strong>\n<p>Find the line that changes the loop state and eventually makes the while condition false.<\/p>\n<\/aside>\n<\/section>\n<section class=\"ati-hero ati-lang-zh\">\n<div>\n<p class=\"ati-label\">Python \u5b66\u4e60\u7b14\u8bb0<\/p>\n<h1 aria-label=\"\u65b0\u624b\u6700\u5bb9\u6613\u5199\u51fa\u7684\u6b7b\u5faa\u73af\">\u65b0\u624b\u6700\u5bb9\u6613\u5199\u51fa\u7684\u6b7b\u5faa\u73af<\/h1>\n<p>\u7406\u89e3 while \u5faa\u73af\u4e3a\u4f55\u505c\u4e0d\u4e0b\u6765\uff0c\u5e76\u5b66\u4f1a\u8ba9\u505c\u6b62\u6761\u4ef6\u771f\u6b63\u80fd\u591f\u53d1\u751f\u3002<\/p>\n<div class=\"ati-article-meta\"><span>\u4f5c\u8005\uff1aBerny<\/span><span>2026 \u5e74 9 \u6708 23 \u65e5<\/span><\/div>\n<\/div>\n<aside class=\"ati-side\"><strong>\u6761\u4ef6<br>\u66f4\u65b0<br>\u505c\u6b62<\/strong>\n<p>\u627e\u5230\u6539\u53d8\u5faa\u73af\u72b6\u6001\u7684\u90a3\u4e00\u884c\uff0c\u8ba9 while \u6761\u4ef6\u6700\u7ec8\u80fd\u591f\u53d8\u6210 False\u3002<\/p>\n<\/aside>\n<\/section>\n<section class=\"ati-article-shell\">\n<article class=\"ati-article-card\">\n<div class=\"ati-share-tools\" data-ati-share>\n<div class=\"ati-share-copy\">\n<p class=\"ati-share-kicker\">\u5206\u4eab\u8fd9\u7bc7\u6587\u7ae0<\/p>\n<p class=\"ati-share-note\">\u590d\u5236\u94fe\u63a5\u3001\u4f7f\u7528\u624b\u673a\u5206\u4eab\u3001\u7528\u5fae\u4fe1\u626b\u7801\uff0c\u6216\u901a\u8fc7\u90ae\u4ef6\u53d1\u9001\u3002<\/p>\n<\/div>\n<div class=\"ati-share-actions\">\n    <button type=\"button\" data-share-native>\u5206\u4eab<\/button><br>\n    <button type=\"button\" data-share-copy-link>\u590d\u5236\u94fe\u63a5<\/button><br>\n    <button type=\"button\" data-share-wechat>\u5fae\u4fe1\u4e8c\u7ef4\u7801<\/button><br>\n    <a data-share-email>\u90ae\u7bb1<\/a>\n  <\/div>\n<div class=\"ati-share-qr\" data-share-qr hidden>\n    <img loading=\"lazy\" data-share-qr-img alt=\"QR code for sharing this article\">\n<p>\u4f7f\u7528\u5fae\u4fe1\u626b\u7801\uff0c\u7136\u540e\u5206\u4eab\u6587\u7ae0\u94fe\u63a5\u3002<\/p>\n<\/div>\n<p class=\"ati-share-status\" data-share-status aria-live=\"polite\">\n<\/p><\/div>\n<div class=\"ati-article-content ati-lang-en\">\n<article class=\"ati-post-article\">\n<p>Your program keeps printing the same number, the terminal will not stop, and everything seems frozen. Python is probably fine. You have likely created an infinite loop.<\/p>\n<p>The most common beginner mistake is simple: the <code>while<\/code> condition stays <code>True<\/code>, and nothing inside the loop can make it become <code>False<\/code>.<\/p>\n<h2>The Most Common Mistake<\/h2>\n<p>This code is supposed to print 1 through 5:<\/p>\n<pre><code class=\"language-python\">count = 1\n\nwhile count &lt;= 5:\n    print(count)<\/code><\/pre>\n<p>Instead, it keeps printing <code>1<\/code>. The condition <code>count &lt;= 5<\/code> is true, but <code>count<\/code> never changes. Every new check produces the same result.<\/p>\n<h2>Fix It by Updating the Control Variable<\/h2>\n<p>Add <code>count += 1<\/code> inside the loop:<\/p>\n<pre><code class=\"language-python\">count = 1\n\nwhile count &lt;= 5:\n    print(count)\n    count += 1<\/code><\/pre>\n<p>Now <code>count<\/code> eventually becomes 6, making <code>count &lt;= 5<\/code> false. The loop stops naturally.<\/p>\n<p>The real rule is not simply \u201calways add one.\u201d Something inside the loop must change the state so that the stopping condition can eventually be reached.<\/p>\n<h2>Another Trap: Resetting Inside the Loop<\/h2>\n<p>Sometimes an update is present, but the variable is reset on every iteration:<\/p>\n<pre><code class=\"language-python\">count = 1\n\nwhile count &lt;= 5:\n    count = 1\n    print(count)\n    count += 1<\/code><\/pre>\n<p>At the beginning of every iteration, <code>count = 1<\/code> sends the value back to its starting point. Initialization usually belongs before the loop, where it runs once. The loop body should move the state forward.<\/p>\n<h2>User Input Must Be Updated Too<\/h2>\n<p>The same mistake can happen without a counter:<\/p>\n<pre><code class=\"language-python\">answer = input(&quot;Type quit to stop: &quot;)\n\nwhile answer != &quot;quit&quot;:\n    print(&quot;Still running&quot;)<\/code><\/pre>\n<p>If the first answer is not <code>quit<\/code>, the program never asks again. The value controlling the condition cannot change.<\/p>\n<p>Read new input inside the loop:<\/p>\n<pre><code class=\"language-python\">answer = input(&quot;Type quit to stop: &quot;)\n\nwhile answer != &quot;quit&quot;:\n    print(&quot;Still running&quot;)\n    answer = input(&quot;Type quit to stop: &quot;)<\/code><\/pre>\n<p>The controlling value is now user input instead of a counter, but the principle is exactly the same.<\/p>\n<h2>The Three-Question Check<\/h2>\n<p>After writing a <code>while<\/code> loop, ask:<\/p>\n<ol>\n<li>Condition: what must be true for the loop to continue?<\/li>\n<li>Update: which line inside the loop changes that condition?<\/li>\n<li>Stop: when will the condition become false?<\/li>\n<\/ol>\n<p>Consider this example:<\/p>\n<pre><code class=\"language-python\">number = 1\n\nwhile number &lt; 100:\n    number *= 2\n    print(number)<\/code><\/pre>\n<p>The condition is <code>number &lt; 100<\/code>. The update is <code>number *= 2<\/code>. The loop stops when <code>number<\/code> reaches or passes 100.<\/p>\n<p>If you cannot answer one of these three questions, inspect the loop again before running it.<\/p>\n<h2>Is while True Always Wrong?<\/h2>\n<p>No. <code>while True<\/code> intentionally creates an endless loop, but <code>break<\/code> can provide a clear exit:<\/p>\n<pre><code class=\"language-python\">while True:\n    answer = input(&quot;Type quit to stop: &quot;)\n    if answer == &quot;quit&quot;:\n        break<\/code><\/pre>\n<p>This can be useful in interactive programs. Make sure the <code>break<\/code> is reachable and the exit condition is clear.<\/p>\n<h2>Practice<\/h2>\n<ol>\n<li>Explain why <code>while score &lt; 10: print(score)<\/code> cannot stop.<\/li>\n<li>Change an input loop so that it stops when the user enters a blank string.<\/li>\n<li>Challenge: write a <code>while<\/code> loop that counts down from 10 to 1, then identify the line that eventually makes its condition false.<\/li>\n<\/ol>\n<h2>One-Sentence Takeaway<\/h2>\n<p>When you write a <code>while<\/code> loop, find the step inside it that will eventually make the condition false.<\/p>\n<\/article>\n<\/div>\n<div class=\"ati-article-content ati-lang-zh\">\n<article class=\"ati-post-article\">\n<p>\u7a0b\u5e8f\u4e00\u76f4\u6253\u5370\u540c\u4e00\u4e2a\u6570\u5b57\uff0c\u7ec8\u7aef\u505c\u4e0d\u4e0b\u6765\uff0c\u751a\u81f3\u770b\u8d77\u6765\u50cf\u201c\u5361\u4f4f\u4e86\u201d\u3002\u8fd9\u5f80\u5f80\u4e0d\u662f Python \u574f\u4e86\uff0c\u800c\u662f\u4f60\u5199\u51fa\u4e86\u4e00\u4e2a\u6b7b\u5faa\u73af\uff0c\u4e5f\u53eb infinite loop\u3002<\/p>\n<p>\u521d\u5b66\u8005\u6700\u5e38\u89c1\u7684\u539f\u56e0\u5f88\u7b80\u5355\uff1a<code>while<\/code> \u7684\u6761\u4ef6\u4e00\u76f4\u662f <code>True<\/code>\uff0c\u800c\u5faa\u73af\u91cc\u9762\u6ca1\u6709\u4efb\u4f55\u4ee3\u7801\u80fd\u8ba9\u5b83\u53d8\u6210 <code>False<\/code>\u3002<\/p>\n<h2>\u6700\u5e38\u89c1\u7684\u9519\u8bef<\/h2>\n<p>\u4e0b\u9762\u7684\u4ee3\u7801\u60f3\u6253\u5370 1 \u5230 5\uff1a<\/p>\n<pre><code class=\"language-python\">count = 1\n\nwhile count &lt;= 5:\n    print(count)<\/code><\/pre>\n<p>\u4f46\u5b83\u4f1a\u4e00\u76f4\u6253\u5370\uff1a<\/p>\n<pre><code class=\"language-text\">1\n1\n1\n...<\/code><\/pre>\n<p>\u7a0b\u5e8f\u5148\u68c0\u67e5 <code>count &lt;= 5<\/code>\u3002\u56e0\u4e3a <code>count<\/code> \u662f 1\uff0c\u6761\u4ef6\u4e3a <code>True<\/code>\uff0c\u6240\u4ee5\u8fdb\u5165\u5faa\u73af\u3002\u53ef\u662f\u5faa\u73af\u91cc\u53ea\u6253\u5370\u4e86 <code>count<\/code>\uff0c\u6ca1\u6709\u6539\u53d8\u5b83\u3002\u4e0b\u4e00\u8f6e\u68c0\u67e5\u65f6\uff0c<code>count<\/code> \u4ecd\u7136\u662f 1\uff0c\u6761\u4ef6\u5f53\u7136\u8fd8\u662f <code>True<\/code>\u3002<\/p>\n<h2>\u4fee\u590d\u65b9\u6cd5\uff1a\u66f4\u65b0\u63a7\u5236\u53d8\u91cf<\/h2>\n<p>\u7ed9\u5faa\u73af\u52a0\u5165 <code>count += 1<\/code>\uff1a<\/p>\n<pre><code class=\"language-python\">count = 1\n\nwhile count &lt;= 5:\n    print(count)\n    count += 1<\/code><\/pre>\n<p>\u8f93\u51fa\uff1a<\/p>\n<pre><code class=\"language-text\">1\n2\n3\n4\n5<\/code><\/pre>\n<p>\u73b0\u5728\u6bcf\u6b21\u5faa\u73af\u90fd\u4f1a\u8ba9 <code>count<\/code> \u589e\u52a0 1\u3002\u5f53\u5b83\u53d8\u6210 6\uff0c\u6761\u4ef6 <code>count &lt;= 5<\/code> \u5c31\u662f <code>False<\/code>\uff0c\u5faa\u73af\u81ea\u7136\u505c\u6b62\u3002<\/p>\n<p>\u5173\u952e\u4e0d\u53ea\u662f\u201c\u8bb0\u5f97\u52a0\u4e00\u201d\uff0c\u800c\u662f\u786e\u4fdd\u5faa\u73af\u91cc\u6709\u67d0\u79cd\u53d8\u5316\uff0c\u4f1a\u8ba9\u505c\u6b62\u6761\u4ef6\u6700\u7ec8\u6210\u7acb\u3002<\/p>\n<h2>\u53e6\u4e00\u4e2a\u9677\u9631\uff1a\u5728\u5faa\u73af\u91cc\u91cd\u7f6e\u53d8\u91cf<\/h2>\n<p>\u6709\u65f6\u540c\u5b66\u5199\u4e86\u66f4\u65b0\u8bed\u53e5\uff0c\u7a0b\u5e8f\u8fd8\u662f\u505c\u4e0d\u4e0b\u6765\uff1a<\/p>\n<pre><code class=\"language-python\">count = 1\n\nwhile count &lt;= 5:\n    count = 1\n    print(count)\n    count += 1<\/code><\/pre>\n<p>\u6bcf\u8f6e\u5f00\u59cb\u65f6\uff0c<code>count = 1<\/code> \u90fd\u4f1a\u628a\u53d8\u91cf\u91cd\u7f6e\u3002\u5faa\u73af\u672b\u5c3e\u867d\u7136\u628a\u5b83\u52a0\u5230 2\uff0c\u4e0b\u4e00\u8f6e\u53c8\u7acb\u523b\u56de\u5230 1\uff0c\u6240\u4ee5\u6761\u4ef6\u6c38\u8fdc\u65e0\u6cd5\u53d8\u6210 <code>False<\/code>\u3002<\/p>\n<p>\u521d\u59cb\u5316\u901a\u5e38\u5e94\u8be5\u653e\u5728\u5faa\u73af\u5916\uff0c\u53ea\u8fd0\u884c\u4e00\u6b21\uff1a<\/p>\n<pre><code class=\"language-python\">count = 1\n\nwhile count &lt;= 5:\n    print(count)\n    count += 1<\/code><\/pre>\n<p>\u5faa\u73af\u5916\u8d1f\u8d23\u8bbe\u7f6e\u8d77\u70b9\uff0c\u5faa\u73af\u5185\u8d1f\u8d23\u63a8\u8fdb\u72b6\u6001\u3002<\/p>\n<h2>\u7528\u6237\u8f93\u5165\u4e5f\u9700\u8981\u66f4\u65b0<\/h2>\n<p><code>while<\/code> \u7ecf\u5e38\u7528\u6765\u7b49\u5f85\u7528\u6237\u8f93\u5165\u7279\u5b9a\u5185\u5bb9\u3002\u4e0b\u9762\u7684\u7a0b\u5e8f\u4e5f\u4f1a\u65e0\u9650\u91cd\u590d\uff1a<\/p>\n<pre><code class=\"language-python\">answer = input(&quot;Type quit to stop: &quot;)\n\nwhile answer != &quot;quit&quot;:\n    print(&quot;Still running&quot;)<\/code><\/pre>\n<p>\u5982\u679c\u7b2c\u4e00\u6b21\u8f93\u5165\u7684\u4e0d\u662f <code>quit<\/code>\uff0c\u5faa\u73af\u91cc\u6ca1\u6709\u518d\u6b21\u8bfb\u53d6\u8f93\u5165\uff0c<code>answer<\/code> \u5c31\u6c38\u8fdc\u4e0d\u4f1a\u6539\u53d8\u3002<\/p>\n<p>\u6b63\u786e\u5199\u6cd5\u662f\u5728\u5faa\u73af\u91cc\u66f4\u65b0 <code>answer<\/code>\uff1a<\/p>\n<pre><code class=\"language-python\">answer = input(&quot;Type quit to stop: &quot;)\n\nwhile answer != &quot;quit&quot;:\n    print(&quot;Still running&quot;)\n    answer = input(&quot;Type quit to stop: &quot;)<\/code><\/pre>\n<p>\u8fd9\u91cc\u63a7\u5236\u5faa\u73af\u7684\u4e0d\u662f\u8ba1\u6570\u5668\uff0c\u800c\u662f\u7528\u6237\u8f93\u5165\u3002\u4f46\u539f\u5219\u5b8c\u5168\u76f8\u540c\uff1a\u63a7\u5236\u6761\u4ef6\u7684\u503c\u5fc5\u987b\u6709\u673a\u4f1a\u6539\u53d8\u3002<\/p>\n<h2>\u4e09\u6b65\u68c0\u67e5\u6cd5<\/h2>\n<p>\u6bcf\u6b21\u5199\u5b8c <code>while<\/code>\uff0c\u90fd\u68c0\u67e5\u4e09\u4ef6\u4e8b\uff1a<\/p>\n<ol>\n<li>\u6761\u4ef6\uff1a\u4ec0\u4e48\u6761\u4ef6\u4e3a <code>True<\/code> \u65f6\u7ee7\u7eed\uff1f<\/li>\n<li>\u66f4\u65b0\uff1a\u5faa\u73af\u91cc\u7684\u54ea\u4e00\u884c\u4f1a\u6539\u53d8\u8fd9\u4e2a\u6761\u4ef6\uff1f<\/li>\n<li>\u505c\u6b62\uff1a\u5728\u4ec0\u4e48\u60c5\u51b5\u4e0b\uff0c\u6761\u4ef6\u4f1a\u53d8\u6210 <code>False<\/code>\uff1f<\/li>\n<\/ol>\n<p>\u4ee5\u8fd9\u4e2a\u4f8b\u5b50\u4e3a\u4f8b\uff1a<\/p>\n<pre><code class=\"language-python\">number = 1\n\nwhile number &lt; 100:\n    number *= 2\n    print(number)<\/code><\/pre>\n<ul>\n<li>\u6761\u4ef6\u662f <code>number &lt; 100<\/code>\u3002<\/li>\n<li>\u66f4\u65b0\u662f <code>number *= 2<\/code>\u3002<\/li>\n<li>\u5f53 <code>number<\/code> \u8fbe\u5230\u6216\u8d85\u8fc7 100 \u65f6\u505c\u6b62\u3002<\/li>\n<\/ul>\n<p>\u5982\u679c\u8fd9\u4e09\u4e2a\u95ee\u9898\u4e2d\u6709\u4e00\u4e2a\u7b54\u4e0d\u4e0a\u6765\uff0c\u5c31\u5148\u4e0d\u8981\u8fd0\u884c\u4ee3\u7801\uff0c\u91cd\u65b0\u68c0\u67e5\u5faa\u73af\u7ed3\u6784\u3002<\/p>\n<h2>while True \u4e00\u5b9a\u662f\u9519\u8bef\u5417\uff1f<\/h2>\n<p>\u4e0d\u4e00\u5b9a\u3002<code>while True<\/code> \u4f1a\u4e3b\u52a8\u521b\u5efa\u4e00\u4e2a\u65e0\u9650\u5faa\u73af\uff0c\u4f46\u53ef\u4ee5\u7528 <code>break<\/code> \u5728\u660e\u786e\u7684\u4f4d\u7f6e\u9000\u51fa\uff1a<\/p>\n<pre><code class=\"language-python\">while True:\n    answer = input(&quot;Type quit to stop: &quot;)\n    if answer == &quot;quit&quot;:\n        break<\/code><\/pre>\n<p>\u8fd9\u79cd\u5199\u6cd5\u5728\u67d0\u4e9b\u4ea4\u4e92\u7a0b\u5e8f\u91cc\u5f88\u65b9\u4fbf\u3002\u4e0d\u8fc7\u521d\u5b66\u9636\u6bb5\u8981\u786e\u4fdd <code>break<\/code> \u786e\u5b9e\u80fd\u591f\u6267\u884c\uff0c\u5e76\u4e14\u9000\u51fa\u6761\u4ef6\u6e05\u695a\u3002\u5426\u5219\u5b83\u5c31\u4f1a\u6210\u4e3a\u771f\u6b63\u505c\u4e0d\u4e0b\u6765\u7684\u5faa\u73af\u3002<\/p>\n<h2>\u5c0f\u7ec3\u4e60<\/h2>\n<ol>\n<li>\u627e\u51fa\u4e0b\u9762\u4ee3\u7801\u4e0d\u80fd\u505c\u6b62\u7684\u539f\u56e0\uff1a<code>while score &lt; 10: print(score)<\/code>\u3002<\/li>\n<li>\u4fee\u6539\u4e00\u4e2a\u8f93\u5165\u5faa\u73af\uff0c\u8ba9\u7528\u6237\u8f93\u5165\u7a7a\u5b57\u7b26\u4e32\u65f6\u505c\u6b62\u3002<\/li>\n<li>\u6311\u6218\u9898\uff1a\u5199\u4e00\u4e2a\u4ece 10 \u5012\u6570\u5230 1 \u7684 <code>while<\/code> \u5faa\u73af\uff0c\u5e76\u8bf4\u660e\u54ea\u4e00\u884c\u8ba9\u6761\u4ef6\u6700\u7ec8\u53d8\u6210 <code>False<\/code>\u3002<\/li>\n<\/ol>\n<h2>\u4e00\u53e5\u8bdd\u8bb0\u4f4f<\/h2>\n<p>\u5199 <code>while<\/code> \u65f6\uff0c\u4e0d\u53ea\u8981\u770b\u5f00\u59cb\u6761\u4ef6\uff0c\u8fd8\u8981\u627e\u5230\u5faa\u73af\u91cc\u8ba9\u6761\u4ef6\u6700\u7ec8\u53d8\u6210 <code>False<\/code> \u7684\u90a3\u4e00\u6b65\u3002<\/p>\n<\/article>\n<\/div>\n<section class=\"ati-feedback-cta ati-lang-en\" data-ati-feedback>\n<div class=\"ati-feedback-copy\">\n<p class=\"ati-feedback-title\">\u6709\u95ee\u9898\u6216\u5efa\u8bae\uff1f<\/p>\n<p class=\"ati-feedback-note\">\u5982\u679c\u4f60\u5bf9\u672c\u6587\u6709\u7591\u95ee\uff0c\u6216\u5e0c\u671b\u63d0\u51fa\u6539\u8fdb\u5efa\u8bae\uff0c\u8bf7\u7ed9\u6211\u4eec\u53d1\u9001\u79c1\u5bc6\u7559\u8a00\u3002<\/p>\n<\/div>\n<p>  <a class=\"ati-feedback-button\" href=\"\/zh_cn\/contact\/\" data-ati-feedback-link>\u53d1\u9001\u53cd\u9988<\/a><br>\n<\/p><\/section>\n<section class=\"ati-feedback-cta ati-lang-zh\" data-ati-feedback>\n<div class=\"ati-feedback-copy\">\n<p class=\"ati-feedback-title\">\u6709\u95ee\u9898\u6216\u5efa\u8bae\uff1f<\/p>\n<p class=\"ati-feedback-note\">\u5982\u679c\u4f60\u5bf9\u672c\u6587\u6709\u7591\u95ee\uff0c\u6216\u5e0c\u671b\u63d0\u51fa\u6539\u8fdb\u5efa\u8bae\uff0c\u8bf7\u7ed9\u6211\u4eec\u53d1\u9001\u79c1\u5bc6\u7559\u8a00\u3002<\/p>\n<\/div>\n<p>  <a class=\"ati-feedback-button\" href=\"\/zh_cn\/contact\/\" data-ati-feedback-link>\u53d1\u9001\u53cd\u9988<\/a><br>\n<\/p><\/section>\n<div class=\"ati-article-back ati-lang-en\">\n  <a 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.ati-share-kicker{color:#b47c00!important;font-size:13px!important;font-weight:900!important;text-transform:uppercase;letter-spacing:.08em}\n.ati-share-note{margin-top:6px!important;color:#475569!important;font-size:15px!important;line-height:1.45!important}\n.ati-share-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}\n.ati-share-actions button,.ati-share-actions a{display:inline-flex;align-items:center;justify-content:center;min-height:38px;padding:0 13px;border:1px solid #cbd5e1;border-radius:8px;background:#fff;color:#0f172a!important;font:inherit;font-size:13px;font-weight:900;line-height:1;cursor:pointer;text-decoration:none!important}\n.ati-share-actions button:hover,.ati-share-actions a:hover{border-color:#ffc400;background:#fff7d6}\n.ati-share-actions [data-share-copy-link],.ati-share-actions [data-share-native]{background:#ffc400;border-color:#ffc400;color:#050505!important}\n.ati-share-qr{display:flex;gap:14px;align-items:center;margin-top:16px;padding:14px;background:#fff;border:1px solid #e2e8f0;border-radius:8px}\n.ati-share-qr[hidden]{display:none!important}.ati-share-qr img{width:118px;height:118px;border-radius:6px}.ati-share-qr p{color:#475569!important;font-size:14px!important;line-height:1.4!important}\n.ati-share-status{min-height:18px;margin-top:10px!important;color:#0f766e!important;font-size:13px!important;font-weight:800!important}\n@media(max-width:640px){.ati-share-actions button,.ati-share-actions a{width:100%}.ati-share-qr{align-items:flex-start}.ati-share-qr img{width:104px;height:104px}}\n<\/style>\n<p><script data-source=\"ati_article_share_tools\">\n(function(){\n  function text(isZh, en, zh){ return isZh ? zh : en; }\n  function copyText(value, status, message){\n    function done(){ if(status) status.textContent = message; }\n    function fallback(){\n      var input = document.createElement('textarea');\n      input.value = value;\n      input.setAttribute('readonly', '');\n      input.style.position = 'fixed';\n      input.style.left = '-9999px';\n      document.body.appendChild(input);\n      input.select();\n      try { document.execCommand('copy'); } catch(e) {}\n      document.body.removeChild(input);\n      done();\n    }\n    if (navigator.clipboard && navigator.clipboard.writeText) {\n      navigator.clipboard.writeText(value).then(done).catch(fallback);\n    } else fallback();\n  }\n  document.querySelectorAll('[data-ati-share]').forEach(function(box){\n    if (box.dataset.ready) return;\n    box.dataset.ready = '1';\n    var isZh = location.pathname.toLowerCase().includes('\/zh_cn\/');\n    var pageUrl = location.origin + location.pathname;\n    var title = (document.querySelector('.ati-hero h1') || document.querySelector('h1'))?.innerText.trim() || document.title.replace(\/\\s+-\\s+.*$\/, '');\n    var 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