{"id":84,"date":"2026-06-13T18:03:48","date_gmt":"2026-06-13T10:03:48","guid":{"rendered":"https:\/\/www.52runoob.com\/?p=84"},"modified":"2026-06-13T18:03:48","modified_gmt":"2026-06-13T10:03:48","slug":"python-while-%e5%be%aa%e7%8e%af","status":"publish","type":"post","link":"https:\/\/www.52runoob.com\/index.php\/2026\/06\/13\/python-while-%e5%be%aa%e7%8e%af\/","title":{"rendered":"Python while \u5faa\u73af"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u5728 Python \u4e2d\uff0c<code>while<\/code> \u5faa\u73af\u7528\u4e8e<strong>\u5728\u7ed9\u5b9a\u6761\u4ef6\u4e3a <code>True<\/code> \u65f6\uff0c\u91cd\u590d\u6267\u884c\u4e00\u6bb5\u4ee3\u7801\u5757<\/strong>\u3002\u4e0e <code>for<\/code> \u5faa\u73af\uff08\u901a\u5e38\u7528\u4e8e\u904d\u5386\u5df2\u77e5\u957f\u5ea6\u7684\u5e8f\u5217\uff09\u4e0d\u540c\uff0c<code>while<\/code> \u5faa\u73af\u66f4\u9002\u5408\u5904\u7406<strong>\u5faa\u73af\u6b21\u6570\u672a\u77e5<\/strong>\u3001\u9700\u8981<strong>\u6301\u7eed\u7b49\u5f85\u67d0\u4e2a\u72b6\u6001<\/strong>\u6216<strong>\u57fa\u4e8e\u6761\u4ef6\u5224\u65ad<\/strong>\u7684\u573a\u666f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0b\u9762\u6211\u5c06\u4ece<strong>\u57fa\u7840\u8bed\u6cd5<\/strong>\u3001<strong>\u9ad8\u7ea7\u63a7\u5236\u6d41<\/strong>\u3001<strong>\u7ecf\u5178\u5e94\u7528\u573a\u666f<\/strong>\u5230<strong>\u5e38\u89c1\u9677\u9631\u4e0e\u6700\u4f73\u5b9e\u8df5<\/strong>\uff0c\u4e3a\u4f60\u7cfb\u7edf\u68b3\u7406 Python \u7684 <code>while<\/code> \u5faa\u73af\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e00\u3001 \u57fa\u7840\u8bed\u6cd5<\/h3>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">while \u6761\u4ef6\u8868\u8fbe\u5f0f:\n    # \u53ea\u8981\u6761\u4ef6\u4e3a True\uff0c\u5c31\u4f1a\u91cd\u590d\u6267\u884c\u8fd9\u91cc\u7684\u4ee3\u7801\n    # \u6ce8\u610f\uff1a\u5fc5\u987b\u6709\u7f29\u8fdb\uff01\n    pass<\/code><\/pre><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u7b80\u5355\u793a\u4f8b<\/strong>\uff1a<\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">count = 0\nwhile count &lt; 3:\n    print(f&quot;\u5f53\u524d\u8ba1\u6570: {count}&quot;)\n    count += 1  # \u26a0\ufe0f \u5173\u952e\uff1a\u5fc5\u987b\u66f4\u65b0\u6761\u4ef6\u53d8\u91cf\uff0c\u5426\u5219\u4f1a\u9677\u5165\u6b7b\u5faa\u73af\n\nprint(&quot;\u5faa\u73af\u7ed3\u675f\uff01&quot;)<\/code><\/pre><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u8f93\u51fa<\/strong>\uff1a<\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">\u5f53\u524d\u8ba1\u6570: 0\n\u5f53\u524d\u8ba1\u6570: 1\n\u5f53\u524d\u8ba1\u6570: 2\n\u5faa\u73af\u7ed3\u675f\uff01<\/code><\/pre><\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e8c\u3001 \u9ad8\u7ea7\u63a7\u5236\u6d41\uff1a<code>break<\/code>\u3001<code>continue<\/code> \u4e0e <code>else<\/code><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>while<\/code> \u5faa\u73af\u652f\u6301\u4e09\u4e2a\u5f3a\u5927\u7684\u63a7\u5236\u6d41\u5173\u952e\u5b57\uff0c\u80fd\u8ba9\u4f60\u66f4\u7cbe\u7ec6\u5730\u63a7\u5236\u5faa\u73af\u884c\u4e3a\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1. <code>break<\/code>\uff1a\u7acb\u5373\u7ec8\u6b62\u6574\u4e2a\u5faa\u73af<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u6ee1\u8db3\u67d0\u4e2a\u7279\u5b9a\u6761\u4ef6\u65f6\uff0c\u5f3a\u884c\u8df3\u51fa\u5faa\u73af\uff0c\u4e0d\u518d\u6267\u884c\u5269\u4f59\u7684\u5faa\u73af\u4f53\u3002<\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><span>7<\/span><span>8<\/span><span>9<\/span><span>10<\/span><span>11<\/span><span>12<\/span><span>13<\/span><span>14<\/span><span>15<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\"># \u731c\u6570\u5b57\u6e38\u620f\u6838\u5fc3\u903b\u8f91\nsecret_number = 7\nattempts = 0\n\nwhile True:  # \u65e0\u9650\u5faa\u73af\uff0c\u4f9d\u8d56 break \u9000\u51fa\n    guess = int(input(&quot;\u731c\u4e00\u4e2a\u6570\u5b57 (1-10): &quot;))\n    attempts += 1\n\n    if guess == secret_number:\n        print(f&quot;\u606d\u559c\uff01\u4f60\u7528\u4e86 {attempts} \u6b21\u731c\u4e2d\u4e86\u3002&quot;)\n        break  # \u731c\u4e2d\u4e86\uff0c\u7acb\u5373\u8df3\u51fa\u5faa\u73af\n    elif guess &lt; secret_number:\n        print(&quot;\u592a\u5c0f\u4e86\uff0c\u518d\u8bd5\u4e00\u6b21\u3002&quot;)\n    else:\n        print(&quot;\u592a\u5927\u4e86\uff0c\u518d\u8bd5\u4e00\u6b21\u3002&quot;)<\/code><\/pre><\/div><\/div>\n\n\n\n<h4 class=\"wp-block-heading\">2. <code>continue<\/code>\uff1a\u8df3\u8fc7\u672c\u6b21\u5faa\u73af\uff0c\u76f4\u63a5\u8fdb\u5165\u4e0b\u4e00\u6b21\u6761\u4ef6\u5224\u65ad<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u6ee1\u8db3\u67d0\u4e2a\u6761\u4ef6\u65f6\uff0c\u8df3\u8fc7\u5f53\u524d\u5faa\u73af\u4f53\u4e2d\u5269\u4f59\u7684\u4ee3\u7801\uff0c\u76f4\u63a5\u56de\u5230 <code>while<\/code> \u5f00\u5934\u91cd\u65b0\u8bc4\u4f30\u6761\u4ef6\u3002<\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><span>7<\/span><span>8<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\"># \u6253\u5370 1 \u5230 5 \u4e4b\u95f4\u7684\u6240\u6709\u5947\u6570\nnum = 0\nwhile num &lt; 5:\n    num += 1\n    if num % 2 == 0:\n        continue  # \u5982\u679c\u662f\u5076\u6570\uff0c\u8df3\u8fc7\u540e\u9762\u7684 print\uff0c\u76f4\u63a5\u8fdb\u5165\u4e0b\u4e00\u6b21\u5faa\u73af\n\n    print(f&quot;\u5947\u6570: {num}&quot;)<\/code><\/pre><\/div><\/div>\n\n\n\n<h4 class=\"wp-block-heading\">3. <code>else<\/code>\uff1a<code>while<\/code> \u5faa\u73af\u72ec\u6709\u7684\u9ad8\u7ea7\u7279\u6027 \ud83c\udf1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Python \u7684 <code>while<\/code> (\u548c <code>for<\/code>) \u5faa\u73af\u53ef\u4ee5\u5e26\u4e00\u4e2a <code>else<\/code> \u5b50\u53e5\u3002<strong>\u53ea\u6709\u5f53\u5faa\u73af\u6761\u4ef6\u53d8\u4e3a <code>False<\/code> \u800c\u81ea\u7136\u7ed3\u675f\u65f6\uff0c<code>else<\/code> \u5757\u624d\u4f1a\u6267\u884c\u3002\u5982\u679c\u5faa\u73af\u662f\u88ab <code>break<\/code> \u5f3a\u884c\u6253\u65ad\u7684\uff0c<code>else<\/code> \u5757\u5c06\u88ab\u8df3\u8fc7\u3002<\/strong><\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><span>7<\/span><span>8<\/span><span>9<\/span><span>10<\/span><span>11<\/span><span>12<\/span><span>13<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\"># \u573a\u666f\uff1a\u5728\u5217\u8868\u4e2d\u67e5\u627e\u7279\u5b9a\u5143\u7d20\nitems = [&quot;apple&quot;, &quot;banana&quot;, &quot;orange&quot;, &quot;grape&quot;]\ntarget = &quot;melon&quot;\nindex = 0\n\nwhile index &lt; len(items):\n    if items[index] == target:\n        print(f&quot;\u627e\u5230\u4e86\uff01\u5728\u7d22\u5f15 {index} \u5904\u3002&quot;)\n        break  # \u627e\u5230\u4e86\uff0c\u6253\u65ad\u5faa\u73af\uff0celse \u4e0d\u4f1a\u6267\u884c\n    index += 1\nelse:\n    # \u53ea\u6709\u5f53 index &gt;= len(items) \u81ea\u7136\u7ed3\u675f\u65f6\u624d\u4f1a\u6267\u884c\n    print(f&quot;\u904d\u5386\u5b8c\u6bd5\uff0c\u672a\u627e\u5230 &#039;{target}&#039;\u3002&quot;)<\/code><\/pre><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><em>\ud83d\udca1 \u63d0\u793a\uff1a\u8fd9\u4e2a\u7279\u6027\u975e\u5e38\u9002\u5408\u7528\u4e8e\u201c\u641c\u7d22\u201d\u573a\u666f\uff0c\u53ef\u4ee5\u7701\u53bb\u8bbe\u7f6e\u989d\u5916\u7684 <code>found<\/code> \u6807\u5fd7\u53d8\u91cf\u3002<\/em><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e09\u3001 \u7ecf\u5178\u5e94\u7528\u573a\u666f\uff1a\u4ec0\u4e48\u65f6\u5019\u7528 <code>while<\/code>\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u867d\u7136\u5f88\u591a <code>while<\/code> \u5faa\u73af\u53ef\u4ee5\u7528 <code>for<\/code> \u5faa\u73af\u66ff\u4ee3\uff0c\u4f46\u5728\u4ee5\u4e0b\u573a\u666f\u4e2d\uff0c<code>while<\/code> \u662f\u6700\u4f73\u9009\u62e9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5faa\u73af\u6b21\u6570\u672a\u77e5\uff0c\u4f9d\u8d56\u5916\u90e8\u8f93\u5165\u6216\u72b6\u6001<\/strong>\uff1a<br>\u5982\u8bfb\u53d6\u6587\u4ef6\u76f4\u5230 EOF\u3001\u7b49\u5f85\u7528\u6237\u8f93\u5165\u6709\u6548\u6570\u636e\u3001\u7f51\u7edc\u8bf7\u6c42\u91cd\u8bd5\u3002<\/li>\n\n\n\n<li><strong>\u6e38\u620f\u4e3b\u5faa\u73af (Game Loop)<\/strong>\uff1a<br>\u6e38\u620f\u901a\u5e38\u9700\u8981\u6301\u7eed\u8fd0\u884c\uff0c\u76f4\u5230\u73a9\u5bb6\u89e6\u53d1\u201c\u9000\u51fa\u201d\u4e8b\u4ef6\u3002<\/li>\n<\/ol>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">   is_running = True\n   while is_running:\n       handle_input()\n       update_game_state()\n       render_frame()\n       # \u67d0\u4e2a\u4e8b\u4ef6\u4f1a\u5c06 is_running \u8bbe\u4e3a False<\/code><\/pre><\/div><\/div>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u5b9e\u73b0\u590d\u6742\u7684\u8fed\u4ee3\u903b\u8f91<\/strong>\uff1a<br>\u5982\u725b\u987f\u8fed\u4ee3\u6cd5\u6c42\u5e73\u65b9\u6839\u3001\u751f\u6210\u6590\u6ce2\u90a3\u5951\u6570\u5217\u76f4\u5230\u8d85\u8fc7\u67d0\u4e2a\u9608\u503c\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u56db\u3001 \u26a0\ufe0f \u5e38\u89c1\u9677\u9631\u4e0e\u907f\u5751\u6307\u5357<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u9677\u9631 1\uff1a\u65e0\u9650\u5faa\u73af (Infinite Loop)<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u662f\u521d\u5b66\u8005\u6700\u5bb9\u6613\u72af\u7684\u9519\u8bef\u3002\u5982\u679c\u5faa\u73af\u4f53\u5185<strong>\u6ca1\u6709\u66f4\u65b0\u6761\u4ef6\u53d8\u91cf<\/strong>\uff0c\u6216\u8005<strong>\u66f4\u65b0\u903b\u8f91\u6709\u8bef<\/strong>\uff0c\u6761\u4ef6\u5c06\u6c38\u8fdc\u4e3a <code>True<\/code>\u3002<\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><span>7<\/span><span>8<\/span><span>9<\/span><span>10<\/span><span>11<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\"># \u274c \u9519\u8bef\u793a\u8303\uff1a\u5fd8\u8bb0\u66f4\u65b0 i\ni = 0\nwhile i &lt; 5:\n    print(i)\n    # \u7f3a\u5c11 i += 1\uff0c\u7a0b\u5e8f\u5c06\u6c38\u8fdc\u6253\u5370 0\n\n# \u2705 \u6b63\u786e\u505a\u6cd5\uff1a\u786e\u4fdd\u6bcf\u6b21\u8fed\u4ee3\u90fd\u5411\u9000\u51fa\u6761\u4ef6\u9760\u8fd1\ni = 0\nwhile i &lt; 5:\n    print(i)\n    i += 1<\/code><\/pre><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><em>\u8865\u6551\u63aa\u65bd<\/em>\uff1a\u5982\u679c\u4e0d\u5c0f\u5fc3\u5199\u51fa\u6b7b\u5faa\u73af\uff0c\u5728\u7ec8\u7aef\u4e2d\u6309 <code>Ctrl + C<\/code> \u53ef\u4ee5\u5f3a\u5236\u4e2d\u65ad\u7a0b\u5e8f (<code>KeyboardInterrupt<\/code>)\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u9677\u9631 2\uff1a\u5728 <code>while<\/code> \u4e2d\u4fee\u6539\u6b63\u5728\u904d\u5386\u7684\u5217\u8868<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u867d\u7136 <code>while<\/code> \u5141\u8bb8\u4f60\u901a\u8fc7\u7d22\u5f15\u4fee\u6539\u5217\u8868\uff0c\u4f46\u8fd9\u5bb9\u6613\u5bfc\u81f4\u7d22\u5f15\u8d8a\u754c\u6216\u8df3\u8fc7\u5143\u7d20\u3002<\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><span>7<\/span><span>8<\/span><span>9<\/span><span>10<\/span><span>11<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\"># \u274c \u5371\u9669\u64cd\u4f5c\uff1a\u8fb9\u904d\u5386\u8fb9\u5220\u9664\nnums = [1, 2, 2, 3, 4]\ni = 0\nwhile i &lt; len(nums):\n    if nums[i] == 2:\n        nums.pop(i)  # \u5220\u9664\u540e\uff0c\u540e\u9762\u7684\u5143\u7d20\u524d\u79fb\uff0c\u5bfc\u81f4\u4e0b\u4e00\u4e2a\u5143\u7d20\u88ab\u8df3\u8fc7\n    else:\n        i += 1       # \u53ea\u6709\u5728\u6ca1\u5220\u9664\u65f6\u624d\u589e\u52a0\u7d22\u5f15\n\n# \u2705 \u63a8\u8350\u505a\u6cd5\uff1a\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u6216\u521b\u5efa\u65b0\u5217\u8868\nnums = [x for x in nums if x != 2]<\/code><\/pre><\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e94\u3001 <code>while<\/code> \u5faa\u73af\u7684\u6700\u4f73\u5b9e\u8df5<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u4f18\u5148\u4f7f\u7528 <code>for<\/code> \u5faa\u73af<\/strong>\uff1a<br>Python \u4e4b\u7985\u5f3a\u8c03\u53ef\u8bfb\u6027\u3002\u5982\u679c\u4f60\u77e5\u9053\u8981\u8fed\u4ee3\u7684\u5bf9\u8c61\uff08\u5982\u5217\u8868\u3001\u8303\u56f4\u3001\u6587\u4ef6\u884c\uff09\uff0c<strong>\u59cb\u7ec8\u4f18\u5148\u4f7f\u7528 <code>for<\/code> \u5faa\u73af<\/strong>\u3002<code>for<\/code> \u5faa\u73af\u5728\u5e95\u5c42\u7531 C \u8bed\u8a00\u4f18\u5316\uff0c\u901a\u5e38\u6bd4 <code>while<\/code> \u66f4\u5feb\u4e14\u66f4\u4e0d\u6613\u51fa\u9519\u3002<\/li>\n<\/ol>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><span>7<\/span><span>8<\/span><span>9<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">   # \u274c \u4e0d\u63a8\u8350\u7684 while \u5199\u6cd5\n   i = 0\n   while i &lt; len(my_list):\n       print(my_list[i])\n       i += 1\n\n   # \u2705 \u63a8\u8350\u7684 for \u5199\u6cd5\n   for item in my_list:\n       print(item)<\/code><\/pre><\/div><\/div>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u4f7f\u7528\u201c\u54e8\u5175\u201d\u6a21\u5f0f (Sentinel Pattern) \u5904\u7406\u8f93\u5165<\/strong>\uff1a<br>\u5f53\u9700\u8981\u6301\u7eed\u83b7\u53d6\u8f93\u5165\u76f4\u5230\u9047\u5230\u7279\u5b9a\u503c\u65f6\uff0c\u4f7f\u7528 <code>while True<\/code> + <code>break<\/code> \u7ed3\u6784\uff0c\u8fd9\u6bd4\u5728 <code>while<\/code> \u6761\u4ef6\u4e2d\u91cd\u590d\u8c03\u7528\u8f93\u5165\u51fd\u6570\u66f4\u6e05\u6670\uff08\u907f\u514d\u4e86 DRY \u539f\u5219\u8fdd\u89c4\uff09\u3002<\/li>\n<\/ol>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><span>7<\/span><span>8<\/span><span>9<\/span><span>10<\/span><span>11<\/span><span>12<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">   # \u274c \u91cd\u590d\u4ee3\u7801\n   name = input(&quot;Enter name (or &#039;quit&#039;): &quot;)\n   while name != &#039;quit&#039;:\n       print(f&quot;Hello, {name}&quot;)\n       name = input(&quot;Enter name (or &#039;quit&#039;): &quot;) # \u91cd\u590d\u4e86\n\n   # \u2705 \u54e8\u5175\u6a21\u5f0f (\u66f4\u4f18\u96c5)\n   while True:\n       name = input(&quot;Enter name (or &#039;quit&#039;): &quot;)\n       if name == &#039;quit&#039;:\n           break\n       print(f&quot;Hello, {name}&quot;)<\/code><\/pre><\/div><\/div>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u4e3a\u590d\u6742\u7684 <code>while<\/code> \u5faa\u73af\u6dfb\u52a0\u6ce8\u91ca\u6216\u63d0\u53d6\u4e3a\u51fd\u6570<\/strong>\uff1a<br>\u5982\u679c <code>while<\/code> \u5faa\u73af\u7684\u6761\u4ef6\u975e\u5e38\u590d\u6742\uff0c\u6216\u8005\u5faa\u73af\u4f53\u8d85\u8fc7 10-15 \u884c\uff0c\u8003\u8651\u5c06\u5176\u5c01\u88c5\u6210\u4e00\u4e2a\u5e26\u6709\u6e05\u6670\u547d\u540d\u7684\u51fd\u6570\uff0c\u6216\u8005\u5728 <code>while<\/code> \u4e0a\u65b9\u6dfb\u52a0\u6ce8\u91ca\u8bf4\u660e\u9000\u51fa\u6761\u4ef6\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u603b\u7ed3<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>while<\/code> \u7528\u4e8e<strong>\u57fa\u4e8e\u6761\u4ef6<\/strong>\u7684\u91cd\u590d\u6267\u884c\u3002<\/li>\n\n\n\n<li>\u52a1\u5fc5\u786e\u4fdd\u5faa\u73af\u4f53\u5185\u6709<strong>\u6539\u53d8\u6761\u4ef6\u7684\u903b\u8f91<\/strong>\uff0c\u9632\u6b62\u6b7b\u5faa\u73af\u3002<\/li>\n\n\n\n<li>\u5584\u7528 <code>break<\/code> (\u9000\u51fa)\u3001<code>continue<\/code> (\u8df3\u8fc7) \u548c <code>else<\/code> (\u6b63\u5e38\u7ed3\u675f\u540e\u7684\u56de\u8c03)\u3002<\/li>\n\n\n\n<li><strong>\u9ec4\u91d1\u6cd5\u5219<\/strong>\uff1a\u80fd\u7528 <code>for<\/code> \u5faa\u73af\u89e3\u51b3\u7684\u95ee\u9898\uff0c\u5c3d\u91cf\u4e0d\u7528 <code>while<\/code> \u5faa\u73af\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u4f60\u60f3\u770b\u4e00\u4e2a\u5177\u4f53\u7684\u4e1a\u52a1\u573a\u666f\uff08\u4f8b\u5982\uff1a<strong>\u5982\u4f55\u5b9e\u73b0\u5e26\u6709\u6307\u6570\u9000\u907f\u7684\u7f51\u7edc\u8bf7\u6c42\u91cd\u8bd5<\/strong>\uff09\uff0c\u6211\u53ef\u4ee5\u4e3a\u4f60\u5199\u4e00\u4e2a\u7ed3\u5408 <code>while<\/code> \u548c <code>time.sleep<\/code> \u7684\u5b8c\u6574\u793a\u4f8b\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 Python \u4e2d\uff0cwhile \u5faa\u73af\u7528\u4e8e\u5728\u7ed9\u5b9a\u6761&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-84","post","type-post","status-publish","format-standard","hentry","category-python-3-"],"_links":{"self":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/84","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/comments?post=84"}],"version-history":[{"count":1,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/84\/revisions"}],"predecessor-version":[{"id":85,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/84\/revisions\/85"}],"wp:attachment":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/media?parent=84"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/categories?post=84"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/tags?post=84"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}