{"id":1757,"date":"2026-09-20T03:38:12","date_gmt":"2026-09-20T03:38:12","guid":{"rendered":"https:\/\/accelthinking.com\/?p=1757"},"modified":"2026-09-20T03:53:17","modified_gmt":"2026-09-20T03:53:17","slug":"python-for-vs-while-loop","status":"publish","type":"post","link":"https:\/\/accelthinking.com\/zh_cn\/python-for-vs-while-loop\/","title":{"rendered":"How Do You Choose Between for and while in Python?"},"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:0!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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href=\"https:\/\/accelthinking.com\/northstar\/\">Start NorthStar<\/a><a class=\"ati-mobile-close\" href=\"#\">Close<\/a><\/nav>\n<nav class=\"ati-nav\"><a class=\"\" href=\"https:\/\/accelthinking.com\/\">Home<\/a><a class=\"\" href=\"https:\/\/accelthinking.com\/northstar\/\">NorthStar<\/a><a class=\"\" href=\"https:\/\/accelthinking.com\/learning\/\">Learning<\/a><a class=\"active\" href=\"https:\/\/accelthinking.com\/resources\/\">Resources<\/a><a class=\"\" href=\"https:\/\/accelthinking.com\/about\/\">About<\/a><a class=\"\" href=\"https:\/\/accelthinking.com\/contact\/\">Contact<\/a><\/nav>\n<p>      <a class=\"ati-header-cta\" href=\"https:\/\/accelthinking.com\/northstar\/\">Start NorthStar<\/a><br \/>\n    <\/header>\n<p>    <main><\/p>\n<section class=\"ati-hero ati-lang-en\">\n<div>\n<p class=\"ati-label\">Python Learning Notes<\/p>\n<h1 aria-label=\"How Do You Choose Between for and while in Python?\"><span class=\"ati-hero-title-line\"><span class=\"ati-word\"><span class=\"ati-letter\" style=\"--i:0\">H<\/span><span class=\"ati-letter\" style=\"--i:1\">o<\/span><span class=\"ati-letter\" style=\"--i:2\">w<\/span><\/span> <span class=\"ati-word\"><span class=\"ati-letter\" style=\"--i:4\">D<\/span><span class=\"ati-letter\" style=\"--i:5\">o<\/span><\/span> <span class=\"ati-word\"><span class=\"ati-letter\" style=\"--i:7\">Y<\/span><span class=\"ati-letter\" style=\"--i:8\">o<\/span><span class=\"ati-letter\" style=\"--i:9\">u<\/span><\/span> <span class=\"ati-word\"><span class=\"ati-letter\" style=\"--i:11\">C<\/span><span class=\"ati-letter\" style=\"--i:12\">h<\/span><span class=\"ati-letter\" style=\"--i:13\">o<\/span><span class=\"ati-letter\" style=\"--i:14\">o<\/span><span class=\"ati-letter\" style=\"--i:15\">s<\/span><span class=\"ati-letter\" style=\"--i:16\">e<\/span><\/span> <span class=\"ati-word\"><span class=\"ati-letter\" style=\"--i:18\">B<\/span><span class=\"ati-letter\" style=\"--i:19\">e<\/span><span class=\"ati-letter\" style=\"--i:20\">t<\/span><span class=\"ati-letter\" style=\"--i:21\">w<\/span><span class=\"ati-letter\" style=\"--i:22\">e<\/span><span class=\"ati-letter\" style=\"--i:23\">e<\/span><span class=\"ati-letter\" style=\"--i:24\">n<\/span><\/span> <span class=\"ati-word\"><span class=\"ati-letter\" style=\"--i:26\">f<\/span><span class=\"ati-letter\" style=\"--i:27\">o<\/span><span class=\"ati-letter\" style=\"--i:28\">r<\/span><\/span> <span class=\"ati-word\"><span class=\"ati-letter\" style=\"--i:30\">a<\/span><span class=\"ati-letter\" style=\"--i:31\">n<\/span><span class=\"ati-letter\" style=\"--i:32\">d<\/span><\/span> <span class=\"ati-word\"><span class=\"ati-letter\" style=\"--i:34\">w<\/span><span class=\"ati-letter\" style=\"--i:35\">h<\/span><span class=\"ati-letter\" style=\"--i:36\">i<\/span><span class=\"ati-letter\" style=\"--i:37\">l<\/span><span class=\"ati-letter\" style=\"--i:38\">e<\/span><\/span> <span class=\"ati-word\"><span class=\"ati-letter\" style=\"--i:40\">i<\/span><span class=\"ati-letter\" style=\"--i:41\">n<\/span><\/span> <span class=\"ati-word\"><span class=\"ati-letter\" style=\"--i:43\">P<\/span><span class=\"ati-letter\" style=\"--i:44\">y<\/span><span class=\"ati-letter\" style=\"--i:45\">t<\/span><span class=\"ati-letter\" style=\"--i:46\">h<\/span><span class=\"ati-letter\" style=\"--i:47\">o<\/span><span class=\"ati-letter\" style=\"--i:48\">n<\/span><span class=\"ati-letter\" style=\"--i:49\">?<\/span><\/span><\/span><\/h1>\n<p>Choose the Python loop that best matches known items, fixed counts, or changing stop conditions.<\/p>\n<div class=\"ati-article-meta\"><span>By Berny<\/span><span>September 19, 2026<\/span><\/div>\n<\/div>\n<aside class=\"ati-side\"><strong>Known items<br \/>or<br \/>changing condition?<\/strong><\/p>\n<p>Use for to process known items or counts, and while when a condition controls when repetition stops.<\/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=\"for \u548c while \u5230\u5e95\u600e\u4e48\u9009\uff1f\"><span class=\"ati-hero-title-line\">for \u548c while \u5230\u5e95\u600e\u4e48\u9009\uff1f<\/span><\/h1>\n<p>\u4ece\u5df2\u6709\u5185\u5bb9\u3001\u56fa\u5b9a\u6b21\u6570\u548c\u505c\u6b62\u6761\u4ef6\u51fa\u53d1\uff0c\u9009\u62e9\u6700\u9002\u5408\u95ee\u9898\u7684 Python \u5faa\u73af\u3002<\/p>\n<div class=\"ati-article-meta\"><span>\u4f5c\u8005\uff1aBerny<\/span><span>2026 \u5e74 9 \u6708 19 \u65e5<\/span><\/div>\n<\/div>\n<aside class=\"ati-side\"><strong>\u5df2\u6709\u5185\u5bb9<br \/>\u8fd8\u662f<br \/>\u6761\u4ef6\u53d8\u5316\uff1f<\/strong><\/p>\n<p>\u904d\u5386\u5df2\u6709\u5185\u5bb9\u6216\u5df2\u77e5\u6b21\u6570\u7528 for\uff1b\u7531\u6761\u4ef6\u51b3\u5b9a\u4f55\u65f6\u505c\u6b62\u5219\u7528 while\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\">Share this article<\/p>\n<p class=\"ati-share-note\">Copy the link, open your phone share sheet, scan the QR code for WeChat, or send by email.<\/p>\n<\/p><\/div>\n<div class=\"ati-share-actions\">\n    <button type=\"button\" data-share-native>Share<\/button><br \/>\n    <button type=\"button\" data-share-copy-link>Copy Link<\/button><br \/>\n    <button type=\"button\" data-share-wechat>WeChat QR<\/button><br \/>\n    <a data-share-email>Email<\/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\"><\/p>\n<p>Scan with WeChat, then share the article link.<\/p>\n<\/p><\/div>\n<p class=\"ati-share-status\" data-share-status aria-live=\"polite\">\n<\/div>\n<div class=\"ati-article-content ati-lang-en\">\n<article class=\"ati-post-article\">\n<p>Python has two common kinds of loops: <code>for<\/code> and <code>while<\/code>. Both repeat code, so beginners often wonder which one to choose.<\/p>\n<p>You do not need to memorize a complicated rule. Ask one question: are you processing a known group of items, or are you waiting for a condition to change? The first usually calls for <code>for<\/code>; the second usually calls for <code>while<\/code>.<\/p>\n<h2>Start with Two Problems<\/h2>\n<p>First, print every name in a list:<\/p>\n<pre><code class=\"language-python\">names = [&quot;Amy&quot;, &quot;Ben&quot;, &quot;Chris&quot;]\n\nfor name in names:\n    print(name)<\/code><\/pre>\n<p>The items are already known. A <code>for<\/code> loop naturally means \u201cdo this once for each item.\u201d<\/p>\n<p>Now keep asking for a password until it is correct:<\/p>\n<pre><code class=\"language-python\">password = &quot;&quot;\n\nwhile password != &quot;python123&quot;:\n    password = input(&quot;Password: &quot;)<\/code><\/pre>\n<p>We do not know how many attempts the user will need. We only know the stopping condition, so <code>while<\/code> is a better match.<\/p>\n<h2>When to Use for<\/h2>\n<p>Use <code>for<\/code> when you want to visit each item in a collection such as a list, string, or tuple.<\/p>\n<pre><code class=\"language-python\">scores = [82, 91, 76]\n\nfor score in scores:\n    print(score)<\/code><\/pre>\n<p>If the number of repetitions is known, use <code>for<\/code> with <code>range()<\/code>:<\/p>\n<pre><code class=\"language-python\">for number in range(5):\n    print(number)<\/code><\/pre>\n<p>A <code>for<\/code> loop manages the next item for you, which usually makes the code shorter and reduces the chance of forgetting an update.<\/p>\n<h2>When to Use while<\/h2>\n<p>Use <code>while<\/code> when the number of repetitions is unknown but the condition for continuing is clear.<\/p>\n<pre><code class=\"language-python\">answer = &quot;&quot;\n\nwhile answer != &quot;quit&quot;:\n    answer = input(&quot;Type quit to stop: &quot;).lower()<\/code><\/pre>\n<p>This loop may run once or ten times. It continues because <code>answer != &quot;quit&quot;<\/code> is true, not because a fixed number of repetitions was chosen in advance.<\/p>\n<p>Common uses include user input, game states, simulations, and tasks described as \u201ckeep going until&#8230;\u201d<\/p>\n<h2>Could Both Loops Work?<\/h2>\n<p>Often, yes, but one version may express the idea more clearly. Here is a <code>while<\/code> loop that prints 0 through 4:<\/p>\n<pre><code class=\"language-python\">number = 0\n\nwhile number &lt; 5:\n    print(number)\n    number += 1<\/code><\/pre>\n<p>You must initialize the counter, test it, and update it. If you forget <code>number += 1<\/code>, the loop may never stop.<\/p>\n<p>The <code>for<\/code> version is more direct:<\/p>\n<pre><code class=\"language-python\">for number in range(5):\n    print(number)<\/code><\/pre>\n<p>When the task naturally sounds like \u201cfor each item\u201d or \u201crepeat this many times,\u201d prefer <code>for<\/code>.<\/p>\n<h2>The Most Important while Check<\/h2>\n<p>Inside a <code>while<\/code> loop, something must move the condition toward <code>False<\/code>.<\/p>\n<pre><code class=\"language-python\">count = 1\n\nwhile count &lt;= 3:\n    print(count)\n    count += 1<\/code><\/pre>\n<p>Here, <code>count += 1<\/code> eventually makes <code>count &lt;= 3<\/code> false. Without that update, the loop would not end.<\/p>\n<p>After writing a <code>while<\/code> loop, ask: which variable controls the loop, where does it change, and when will the condition become false?<\/p>\n<h2>Quick Comparison<\/h2>\n<table>\n<thead>\n<tr>\n<th>Situation<\/th>\n<th>Recommended loop<\/th>\n<th>Clue<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Process every item in a list or string<\/td>\n<td><code>for<\/code><\/td>\n<td>Once for each item<\/td>\n<\/tr>\n<tr>\n<td>Repeat a known number of times<\/td>\n<td><code>for<\/code> + <code>range()<\/code><\/td>\n<td>The count is known<\/td>\n<\/tr>\n<tr>\n<td>Wait for specific user input<\/td>\n<td><code>while<\/code><\/td>\n<td>Unknown count, clear stop condition<\/td>\n<\/tr>\n<tr>\n<td>Continue while a state is true<\/td>\n<td><code>while<\/code><\/td>\n<td>The condition controls repetition<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>This is a practical guideline, not an unbreakable law. Choose the loop that describes the problem most clearly.<\/p>\n<h2>Practice<\/h2>\n<ol>\n<li>Print every color in <code>colors = [&quot;red&quot;, &quot;green&quot;, &quot;blue&quot;]<\/code>. Which loop should you choose?<\/li>\n<li>Read user input until the user enters a blank line. Which loop should you choose?<\/li>\n<li>Challenge: print 1 through 5 with both <code>for<\/code> and <code>while<\/code>, then compare the steps each version requires.<\/li>\n<\/ol>\n<h2>One-Sentence Takeaway<\/h2>\n<p>Use <code>for<\/code> for known items or a known count; use <code>while<\/code> when repetition depends on a changing condition and the count is unknown.<\/p>\n<\/article>\n<\/div>\n<div class=\"ati-article-content ati-lang-zh\">\n<article class=\"ati-post-article\">\n<p>Python \u91cc\u6709 <code>for<\/code> \u548c <code>while<\/code> \u4e24\u79cd\u5e38\u7528\u5faa\u73af\u3002\u5b83\u4eec\u90fd\u80fd\u8ba9\u4ee3\u7801\u91cd\u590d\u8fd0\u884c\uff0c\u6240\u4ee5\u521d\u5b66\u8005\u5e38\u5e38\u4e0d\u77e5\u9053\u8be5\u9009\u54ea\u4e00\u4e2a\u3002<\/p>\n<p>\u5176\u5b9e\u4e0d\u9700\u8981\u6b7b\u80cc\u8bed\u6cd5\u3002\u5148\u95ee\u4e00\u53e5\uff1a\u4f60\u662f\u5728\u201c\u4f9d\u6b21\u5904\u7406\u4e00\u7ec4\u5df2\u6709\u5185\u5bb9\u201d\uff0c\u8fd8\u662f\u5728\u201c\u7b49\u5f85\u67d0\u4e2a\u6761\u4ef6\u6539\u53d8\u201d\uff1f\u524d\u8005\u901a\u5e38\u9009 <code>for<\/code>\uff0c\u540e\u8005\u901a\u5e38\u9009 <code>while<\/code>\u3002<\/p>\n<h2>\u5148\u770b\u4e24\u4e2a\u95ee\u9898<\/h2>\n<p>\u95ee\u9898\u4e00\uff1a\u628a\u540d\u5355\u91cc\u7684\u6bcf\u4e2a\u540d\u5b57\u90fd\u6253\u5370\u51fa\u6765\u3002<\/p>\n<pre><code class=\"language-python\">names = [&quot;Amy&quot;, &quot;Ben&quot;, &quot;Chris&quot;]\n\nfor name in names:\n    print(name)<\/code><\/pre>\n<p>\u8fd9\u91cc\u5df2\u7ecf\u6709\u4e00\u7ec4\u660e\u786e\u7684\u6570\u636e\uff0c\u7a0b\u5e8f\u53ea\u8981\u4f9d\u6b21\u5904\u7406\u6bcf\u4e2a\u540d\u5b57\u3002<code>for<\/code> \u6b63\u597d\u8868\u8fbe\u201c\u5bf9\u6bcf\u4e2a\u5143\u7d20\u505a\u4e00\u6b21\u201d\u3002<\/p>\n<p>\u95ee\u9898\u4e8c\uff1a\u4e0d\u65ad\u8ba9\u7528\u6237\u8f93\u5165\u5bc6\u7801\uff0c\u76f4\u5230\u8f93\u5165\u6b63\u786e\u3002<\/p>\n<pre><code class=\"language-python\">password = &quot;&quot;\n\nwhile password != &quot;python123&quot;:\n    password = input(&quot;Password: &quot;)<\/code><\/pre>\n<p>\u7a0b\u5e8f\u4e8b\u5148\u4e0d\u77e5\u9053\u7528\u6237\u8981\u5c1d\u8bd5\u51e0\u6b21\uff0c\u53ea\u77e5\u9053\u4f55\u65f6\u505c\u6b62\uff1a\u5f53\u5bc6\u7801\u6b63\u786e\u65f6\u7ed3\u675f\u3002\u8fd9\u6837\u7684\u4efb\u52a1\u66f4\u9002\u5408 <code>while<\/code>\u3002<\/p>\n<h2>\u4ec0\u4e48\u65f6\u5019\u9009 for\uff1f<\/h2>\n<p>\u5f53\u4f60\u8981\u904d\u5386\u4e00\u4e2a collection\uff0c\u4f8b\u5982 list\u3001string\u3001tuple\uff0c\u901a\u5e38\u4f7f\u7528 <code>for<\/code>\u3002<\/p>\n<pre><code class=\"language-python\">scores = [82, 91, 76]\n\nfor score in scores:\n    print(score)<\/code><\/pre>\n<p>\u5982\u679c\u91cd\u590d\u6b21\u6570\u5df2\u7ecf\u77e5\u9053\uff0c\u4e5f\u53ef\u4ee5\u642d\u914d <code>range()<\/code>\uff1a<\/p>\n<pre><code class=\"language-python\">for number in range(5):\n    print(number)<\/code><\/pre>\n<p>\u8f93\u51fa\uff1a<\/p>\n<pre><code class=\"language-text\">0\n1\n2\n3\n4<\/code><\/pre>\n<p>\u5728\u8fd9\u4e24\u4e2a\u4f8b\u5b50\u91cc\uff0c\u5faa\u73af\u8981\u5904\u7406\u54ea\u4e9b\u5143\u7d20\u6216\u8fd0\u884c\u591a\u5c11\u6b21\uff0c\u90fd\u5df2\u7ecf\u5f88\u660e\u786e\u3002<code>for<\/code> \u4f1a\u66ff\u4f60\u7ba1\u7406\u201c\u4e0b\u4e00\u4e2a\u5143\u7d20\u201d\uff0c\u4ee3\u7801\u901a\u5e38\u66f4\u77ed\uff0c\u4e5f\u66f4\u4e0d\u5bb9\u6613\u6f0f\u6389\u66f4\u65b0\u6b65\u9aa4\u3002<\/p>\n<h2>\u4ec0\u4e48\u65f6\u5019\u9009 while\uff1f<\/h2>\n<p>\u5f53\u5faa\u73af\u6b21\u6570\u4e0d\u786e\u5b9a\uff0c\u4f46\u505c\u6b62\u6761\u4ef6\u5f88\u660e\u786e\u65f6\uff0c\u901a\u5e38\u4f7f\u7528 <code>while<\/code>\u3002<\/p>\n<pre><code class=\"language-python\">answer = &quot;&quot;\n\nwhile answer != &quot;quit&quot;:\n    answer = input(&quot;Type quit to stop: &quot;).lower()<\/code><\/pre>\n<p>\u8fd9\u4e2a\u5faa\u73af\u53ef\u80fd\u8fd0\u884c\u4e00\u6b21\uff0c\u4e5f\u53ef\u80fd\u8fd0\u884c\u5341\u6b21\u3002\u51b3\u5b9a\u5b83\u662f\u5426\u7ee7\u7eed\u7684\uff0c\u4e0d\u662f\u4e00\u4e2a\u9884\u5148\u786e\u5b9a\u7684\u6b21\u6570\uff0c\u800c\u662f\u5e03\u5c14\u6761\u4ef6 <code>answer != &quot;quit&quot;<\/code>\u3002<\/p>\n<p><code>while<\/code> \u5e38\u89c1\u4e8e\u7528\u6237\u8f93\u5165\u3001\u6e38\u620f\u72b6\u6001\u3001\u6a21\u62df\u8fc7\u7a0b\uff0c\u4ee5\u53ca\u201c\u6301\u7eed\u6267\u884c\uff0c\u76f4\u5230\u2026\u2026\u201d\u8fd9\u4e00\u7c7b\u4efb\u52a1\u3002<\/p>\n<h2>\u540c\u4e00\u4e2a\u4efb\u52a1\uff0c\u4e24\u79cd\u5faa\u73af\u90fd\u80fd\u5199\u5417\uff1f<\/h2>\n<p>\u5f88\u591a\u65f6\u5019\u53ef\u4ee5\uff0c\u4f46\u4e0d\u4ee3\u8868\u4e24\u79cd\u5199\u6cd5\u540c\u6837\u6e05\u695a\u3002\u4f8b\u5982\u6253\u5370 0 \u5230 4\uff1a<\/p>\n<pre><code class=\"language-python\">number = 0\n\nwhile number &lt; 5:\n    print(number)\n    number += 1<\/code><\/pre>\n<p>\u5b83\u80fd\u8fd0\u884c\uff0c\u4f46\u4f60\u5fc5\u987b\u81ea\u5df1\u521d\u59cb\u5316 <code>number<\/code>\u3001\u68c0\u67e5\u6761\u4ef6\uff0c\u8fd8\u8981\u8bb0\u5f97\u6267\u884c <code>number += 1<\/code>\u3002\u6f0f\u6389\u6700\u540e\u4e00\u6b65\uff0c\u5c31\u53ef\u80fd\u4ea7\u751f\u65e0\u9650\u5faa\u73af\u3002<\/p>\n<p>\u540c\u4e00\u4e2a\u4efb\u52a1\u7528 <code>for<\/code> \u66f4\u76f4\u63a5\uff1a<\/p>\n<pre><code class=\"language-python\">for number in range(5):\n    print(number)<\/code><\/pre>\n<p>\u6240\u4ee5\uff0c\u80fd\u81ea\u7136\u5199\u6210\u201c\u5bf9\u8fd9\u4e9b\u5143\u7d20\u9010\u4e2a\u5904\u7406\u201d\u6216\u201c\u91cd\u590d\u56fa\u5b9a\u6b21\u6570\u201d\u65f6\uff0c\u4f18\u5148\u8003\u8651 <code>for<\/code>\u3002<\/p>\n<h2>while \u6700\u91cd\u8981\u7684\u68c0\u67e5<\/h2>\n<p>\u5199 <code>while<\/code> \u65f6\uff0c\u4e00\u5b9a\u8981\u786e\u8ba4\u5faa\u73af\u5185\u90e8\u4f1a\u8ba9\u6761\u4ef6\u9010\u6e10\u63a5\u8fd1 <code>False<\/code>\u3002<\/p>\n<pre><code class=\"language-python\">count = 1\n\nwhile count &lt;= 3:\n    print(count)\n    count += 1<\/code><\/pre>\n<p>\u8fd9\u91cc <code>count += 1<\/code> \u4f1a\u8ba9 <code>count &lt;= 3<\/code> \u6700\u7ec8\u53d8\u6210 <code>False<\/code>\u3002\u5982\u679c\u5220\u9664\u8fd9\u4e00\u884c\uff0c<code>count<\/code> \u6c38\u8fdc\u662f 1\uff0c\u5faa\u73af\u5c31\u4e0d\u4f1a\u7ed3\u675f\u3002<\/p>\n<p>\u5199\u5b8c <code>while<\/code> \u540e\u53ef\u4ee5\u81ea\u95ee\uff1a\u54ea\u4e2a\u53d8\u91cf\u63a7\u5236\u5faa\u73af\uff1f\u5b83\u5728\u54ea\u91cc\u66f4\u65b0\uff1f\u6761\u4ef6\u4ec0\u4e48\u65f6\u5019\u4f1a\u53d8\u6210 <code>False<\/code>\uff1f<\/p>\n<h2>\u5bf9\u6bd4\u4e00\u4e0b<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u60c5\u51b5<\/th>\n<th>\u63a8\u8350\u5faa\u73af<\/th>\n<th>\u5224\u65ad\u7ebf\u7d22<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u4f9d\u6b21\u5904\u7406 list \u6216 string<\/td>\n<td><code>for<\/code><\/td>\n<td>\u5bf9\u6bcf\u4e2a\u5143\u7d20\u505a\u4e00\u6b21<\/td>\n<\/tr>\n<tr>\n<td>\u5df2\u77e5\u8981\u91cd\u590d\u591a\u5c11\u6b21<\/td>\n<td><code>for<\/code> + <code>range()<\/code><\/td>\n<td>\u6b21\u6570\u5df2\u7ecf\u786e\u5b9a<\/td>\n<\/tr>\n<tr>\n<td>\u7b49\u5f85\u7528\u6237\u8f93\u5165\u7279\u5b9a\u5185\u5bb9<\/td>\n<td><code>while<\/code><\/td>\n<td>\u6b21\u6570\u672a\u77e5\uff0c\u505c\u6b62\u6761\u4ef6\u660e\u786e<\/td>\n<\/tr>\n<tr>\n<td>\u72b6\u6001\u6ee1\u8db3\u524d\u6301\u7eed\u8fd0\u884c<\/td>\n<td><code>while<\/code><\/td>\n<td>\u6761\u4ef6\u4e3a\u771f\u5c31\u7ee7\u7eed<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u8fd9\u4e0d\u662f\u4e0d\u80fd\u6253\u7834\u7684\u89c4\u5b9a\uff0c\u800c\u662f\u4e00\u4e2a\u8ba9\u4ee3\u7801\u66f4\u8d34\u8fd1\u95ee\u9898\u672c\u8eab\u7684\u9009\u62e9\u65b9\u6cd5\u3002<\/p>\n<h2>\u5c0f\u7ec3\u4e60<\/h2>\n<ol>\n<li>\u6253\u5370 list <code>colors = [&quot;red&quot;, &quot;green&quot;, &quot;blue&quot;]<\/code> \u4e2d\u7684\u6bcf\u4e2a\u989c\u8272\uff0c\u5e94\u8be5\u9009\u54ea\u79cd\u5faa\u73af\uff1f<\/li>\n<li>\u4e0d\u65ad\u8bfb\u53d6\u7528\u6237\u8f93\u5165\uff0c\u76f4\u5230\u7528\u6237\u8f93\u5165\u7a7a\u5b57\u7b26\u4e32\uff0c\u5e94\u8be5\u9009\u54ea\u79cd\u5faa\u73af\uff1f<\/li>\n<li>\u6311\u6218\u9898\uff1a\u5206\u522b\u7528 <code>for<\/code> \u548c <code>while<\/code> \u6253\u5370 1 \u5230 5\uff0c\u5e76\u6bd4\u8f83\u54ea\u4e00\u79cd\u66f4\u5bb9\u6613\u6f0f\u5199\u6b65\u9aa4\u3002<\/li>\n<\/ol>\n<h2>\u4e00\u53e5\u8bdd\u8bb0\u4f4f<\/h2>\n<p>\u904d\u5386\u5df2\u6709\u5185\u5bb9\u6216\u5df2\u77e5\u6b21\u6570\uff0c\u7528 <code>for<\/code>\uff1b\u91cd\u590d\u5230\u6761\u4ef6\u6539\u53d8\u3001\u6b21\u6570\u672a\u77e5\uff0c\u7528 <code>while<\/code>\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\">Questions or feedback?<\/p>\n<p class=\"ati-feedback-note\">Have a question about this article or want to suggest an improvement? 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