{"id":323,"date":"2023-07-29T23:20:16","date_gmt":"2023-05-13T11:52:16","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/python%e7%9a%84for%e5%be%aa%e7%8e%af%e9%99%84%e5%b8%a6%e7%ae%80%e5%8d%95%e7%a4%ba%e4%be%8b\/"},"modified":"2025-08-01T22:24:26","modified_gmt":"2025-08-01T14:24:26","slug":"python%e7%9a%84for%e5%be%aa%e7%8e%af%e9%99%84%e5%b8%a6%e7%ae%80%e5%8d%95%e7%a4%ba%e4%be%8b","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/python%e7%9a%84for%e5%be%aa%e7%8e%af%e9%99%84%e5%b8%a6%e7%ae%80%e5%8d%95%e7%a4%ba%e4%be%8b\/","title":{"rendered":"Python for\u5faa\u73af\u5b8c\u5168\u6307\u5357\uff1a\u4ece\u5165\u95e8\u5230\u7cbe\u901a\uff08\u9644\u5b9e\u4f8b\uff09"},"content":{"rendered":"<p>\u5728Python\u4e2d\uff0cfor\u5faa\u73af\u662f\u4e00\u79cd\u8fed\u4ee3\u7ed3\u6784\u3002\u5982\u679c\u4f60\u6709\u4e00\u4e2a\u5e8f\u5217\u5bf9\u8c61\uff0c\u6bd4\u5982\u4e00\u4e2a\u5217\u8868\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528for\u5faa\u73af\u6765\u8fed\u4ee3\u5217\u8868\u4e2d\u7684\u9879\u76ee\u3002<\/p>\n<p>for\u5faa\u73af\u7684\u529f\u80fd\u4e0e\u60a8\u5728\u8bb8\u591a\u5176\u4ed6\u7f16\u7a0b\u8bed\u8a00\u4e2d\u770b\u5230\u7684\u529f\u80fd\u6ca1\u6709\u592a\u5927\u7684\u533a\u522b\u3002<\/p>\n<p>\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u63a2\u8ba8Python\u7684for\u5faa\u73af\uff0c\u5e76\u5b66\u4e60\u5982\u4f55\u8fed\u4ee3\u4e0d\u540c\u7684\u5e8f\u5217\uff0c\u5305\u62ec\u5217\u8868\u3001\u5143\u7ec4\u7b49\u7b49\u3002\u6b64\u5916\uff0c\u6211\u4eec\u8fd8\u5c06\u5b66\u4e60\u4f7f\u7528break\u548ccontinue\u8bed\u53e5\u6765\u63a7\u5236\u5faa\u73af\u7684\u6d41\u7a0b\u3002<\/p>\n<h2>Python\u7684for\u5faa\u73af\u7684\u57fa\u672c\u8bed\u6cd5<\/h2>\n<p>\u5728Python\u4e2d\uff0cfor\u5faa\u73af\u7684\u57fa\u672c\u8bed\u6cd5\u770b\u8d77\u6765\u7c7b\u4f3c\u4e8e\u4ee5\u4e0b\u6240\u793a\u7684\u6837\u5f0f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token keyword\">for<\/span> iterator_variable <span class=\"token keyword\">in<\/span> sequence_name<span class=\"token punctuation\">:<\/span>\r\n\tStatements\r\n\t<span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span>\r\n\tStatements\r\n<\/code><\/pre>\n<p>\u8ba9\u6211\u66f4\u597d\u5730\u89e3\u91caPython for\u5faa\u73af\u7684\u8bed\u6cd5\u3002<\/p>\n<ul class=\"post-ul\">\n<li>\u8bed\u53e5\u7684\u7b2c\u4e00\u4e2a\u5355\u8bcd\u662f\u5173\u952e\u5b57&#8221;for&#8221;\uff0c\u5b83\u8868\u793afor\u5faa\u73af\u7684\u5f00\u59cb\u3002<\/li>\n<li>\u7136\u540e\u662f\u6211\u4eec\u6709\u7684\u8fed\u4ee3\u5668\u53d8\u91cf\uff0c\u5b83\u4f1a\u904d\u5386\u5e8f\u5217\u4e2d\u7684\u5143\u7d20\uff0c\u5e76\u53ef\u4ee5\u5728\u5faa\u73af\u5185\u90e8\u4f7f\u7528\u6765\u6267\u884c\u5404\u79cd\u529f\u80fd\u3002<\/li>\n<li>\u63a5\u4e0b\u6765\u662fPython\u4e2d\u7684&#8221;in&#8221;\u5173\u952e\u5b57\uff0c\u5b83\u544a\u8bc9\u8fed\u4ee3\u5668\u53d8\u91cf\u5728\u5e8f\u5217\u4e2d\u7684\u5143\u7d20\u4e0a\u8fdb\u884c\u5faa\u73af\u3002<\/li>\n<li>\u6700\u540e\uff0c\u6211\u4eec\u6709\u5e8f\u5217\u53d8\u91cf\uff0c\u5b83\u53ef\u4ee5\u662f\u4e00\u4e2a\u5217\u8868\u3001\u4e00\u4e2a\u5143\u7ec4\u6216\u4efb\u4f55\u5176\u4ed6\u7c7b\u578b\u7684\u8fed\u4ee3\u5668\u3002<\/li>\n<li>\u5faa\u73af\u7684\u8bed\u53e5\u90e8\u5206\u662f\u4f60\u53ef\u4ee5\u4f7f\u7528\u8fed\u4ee3\u5668\u53d8\u91cf\u5e76\u6267\u884c\u5404\u79cd\u529f\u80fd\u7684\u5730\u65b9\u3002<\/li>\n<\/ul>\n<h3>\u4f7f\u7528for\u5faa\u73af\u9010\u4e2a\u6253\u5370\u5b57\u7b26\u4e32\u7684\u5b57\u6bcd<\/h3>\n<p>Python\u7684\u5b57\u7b26\u4e32\u662f\u7531\u5b57\u7b26\u7ec4\u6210\u7684\u5e8f\u5217\u3002\u5982\u679c\u5728\u4f60\u7684\u7f16\u7a0b\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u4f60\u9700\u8981\u9010\u4e2a\u904d\u5386\u5b57\u7b26\u4e32\u7684\u5b57\u7b26\uff0c\u4f60\u53ef\u4ee5\u5728\u8fd9\u91cc\u4f7f\u7528for\u5faa\u73af\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u5982\u4f55\u5b9e\u73b0\u7684\uff1a<\/p>\n<pre class=\"post-pre\"><code>word<span class=\"token operator\">=<\/span><span class=\"token string\">\"anaconda\"<\/span>\r\n<span class=\"token keyword\">for<\/span> letter <span class=\"token keyword\">in<\/span> word<span class=\"token punctuation\">:<\/span>\r\n\t<span class=\"token keyword\">print<\/span> <span class=\"token punctuation\">(<\/span>letter<span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>\u8f93\u51fa\uff1a<\/p>\n<pre class=\"post-pre\"><code>a\r\nn\r\na\r\nc\r\no\r\nn\r\nd\r\na\r\n<\/code><\/pre>\n<p>\u8fd9\u4e2a\u5faa\u73af\u80fd\u591f\u8fd0\u884c\u7684\u539f\u56e0\u662f\u56e0\u4e3aPython\u5c06&#8221;\u5b57\u7b26\u4e32&#8221;\u89c6\u4e3a\u5b57\u7b26\u5e8f\u5217\uff0c\u800c\u4e0d\u662f\u6574\u4e2a\u5b57\u7b26\u4e32\u7684\u89c2\u70b9\u3002<\/p>\n<h3>\u4f7f\u7528for\u5faa\u73af\u8fed\u4ee3\u904d\u5386Python\u7684\u5217\u8868\u6216\u5143\u7ec4<\/h3>\n<p>\u5217\u8868\u548c\u5143\u7ec4\u90fd\u662f\u53ef\u8fed\u4ee3\u5bf9\u8c61\u3002\u8ba9\u6211\u4eec\u73b0\u5728\u770b\u770b\u5982\u4f55\u5faa\u73af\u904d\u5386\u8fd9\u4e9b\u5bf9\u8c61\u4e2d\u7684\u5143\u7d20\u3002<\/p>\n<pre class=\"post-pre\"><code>words<span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">\"Apple\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"Banana\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"Car\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"Dolphin\"<\/span> <span class=\"token punctuation\">]<\/span>\r\n<span class=\"token keyword\">for<\/span> word <span class=\"token keyword\">in<\/span> words<span class=\"token punctuation\">:<\/span>\r\n\t<span class=\"token keyword\">print<\/span> <span class=\"token punctuation\">(<\/span>word<span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>\u8f93\u51fa\uff1a<\/p>\n<pre class=\"post-pre\"><code>Apple\r\nBanana\r\nCar\r\nDolphin\r\n<\/code><\/pre>\n<p>\u73b0\u5728\uff0c\u8ba9\u6211\u4eec\u7ee7\u7eed\u5e76\u5f00\u59cb\u5bf9\u5143\u7ec4\u4e2d\u7684\u5143\u7d20\u8fdb\u884c\u5faa\u73af\u5de5\u4f5c\u3002<\/p>\n<pre class=\"post-pre\"><code>nums <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">)<\/span>\r\n\r\nsum_nums <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span>\r\n\r\n<span class=\"token keyword\">for<\/span> num <span class=\"token keyword\">in<\/span> nums<span class=\"token punctuation\">:<\/span>\r\n    sum_nums <span class=\"token operator\">=<\/span> sum_nums <span class=\"token operator\">+<\/span> num\r\n\r\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f'\u6570\u5b57\u7684\u603b\u548c\u662f <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>sum_nums<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">'<\/span><\/span><span class=\"token punctuation\">)<\/span>\r\n\r\n<span class=\"token comment\"># \u8f93\u51fa<\/span>\r\n<span class=\"token comment\"># \u6570\u5b57\u7684\u603b\u548c\u662f 10<\/span>\r\n<\/code><\/pre>\n<h3>3. \u5d4c\u5957Python\u7684\u5faa\u73af<\/h3>\n<p>\u5f53\u6211\u4eec\u5728\u4e00\u4e2afor\u5faa\u73af\u5185\u90e8\u6dfb\u52a0\u53e6\u4e00\u4e2afor\u5faa\u73af\u65f6\uff0c\u8fd9\u5c31\u88ab\u79f0\u4e3a\u5d4c\u5957\u7684for\u5faa\u73af\u3002\u5d4c\u5957\u7684for\u5faa\u73af\u6709\u591a\u79cd\u5e94\u7528\u3002<\/p>\n<p>\u8bf7\u8003\u8651\u4e0a\u8ff0\u7684\u5217\u8868\u793a\u4f8b\u3002for\u5faa\u73af\u4ece\u5217\u8868\u4e2d\u6253\u5370\u51fa\u5355\u4e2a\u5355\u8bcd\u3002\u4f46\u662f\uff0c\u5982\u679c\u6211\u4eec\u5e0c\u671b\u6253\u5370\u51fa\u5217\u8868\u4e2d\u6bcf\u4e2a\u5355\u8bcd\u7684\u5355\u4e2a\u5b57\u7b26\u5462\uff1f<\/p>\n<p>\u8fd9\u5c31\u662f\u5d4c\u5957\u7684for\u5faa\u73af\u6bd4\u8f83\u5408\u9002\u7684\u5730\u65b9\u3002\u7b2c\u4e00\u4e2a\u5faa\u73af\uff08\u7236\u5faa\u73af\uff09\u5c06\u9010\u4e2a\u904d\u5386\u5355\u8bcd\u3002\u7b2c\u4e8c\u4e2a\u5faa\u73af\uff08\u5b50\u5faa\u73af\uff09\u5c06\u904d\u5386\u6bcf\u4e2a\u5355\u8bcd\u7684\u5b57\u7b26\u3002<\/p>\n<pre class=\"post-pre\"><code>words<span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">\"Apple\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"Banana\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"Car\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"Dolphin\"<\/span> <span class=\"token punctuation\">]<\/span>\r\n<span class=\"token keyword\">for<\/span> word <span class=\"token keyword\">in<\/span> words<span class=\"token punctuation\">:<\/span>\r\n        <span class=\"token comment\">#\u6b64\u5faa\u73af\u4ece\u5217\u8868\u4e2d\u83b7\u53d6\u5355\u8bcd<\/span>\r\n        <span class=\"token keyword\">print<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token string\">\"\u4ee5\u4e0b\u884c\u5c06\u6253\u5370\u6bcf\u4e2a\u5b57\u6bcd \"<\/span><span class=\"token operator\">+<\/span>word<span class=\"token punctuation\">)<\/span>\r\n        <span class=\"token keyword\">for<\/span> letter <span class=\"token keyword\">in<\/span> word<span class=\"token punctuation\">:<\/span>\r\n                <span class=\"token comment\">#\u6b64\u5faa\u73af\u83b7\u53d6\u5355\u8bcd\u7684\u5b57\u6bcd<\/span>\r\n                <span class=\"token keyword\">print<\/span> <span class=\"token punctuation\">(<\/span>letter<span class=\"token punctuation\">)<\/span>\r\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"\"<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\">#\u6b64print\u7528\u4e8e\u6253\u5370\u7a7a\u884c<\/span>\r\n<\/code><\/pre>\n<div>\n    <img decoding=\"async\" class=\"post-images\" title=\"Python\u5d4c\u5957for\u5faa\u73af\u793a\u4f8b\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65648227a4b2f92e6c72ee9b\/28-0.png\" alt=\"python nested for loop example\" \/>\n<\/div>\n<h3>4. \u4f7f\u7528Python\u7684range()\u51fd\u6570<\/h3>\n<p>Python range()\u662f\u4e00\u4e2a\u5185\u7f6e\u51fd\u6570\u3002\u5f53\u4f60\u60f3\u8ba9for\u5faa\u73af\u8fd0\u884c\u7279\u5b9a\u6b21\u6570\uff0c\u6216\u8005\u9700\u8981\u6307\u5b9a\u8981\u6253\u5370\u7684\u5bf9\u8c61\u8303\u56f4\u65f6\uff0crange\u51fd\u6570\u975e\u5e38\u6709\u6548\u3002\u8003\u8651\u4ee5\u4e0b\u793a\u4f8b\uff0c\u6211\u60f3\u6253\u5370\u6570\u5b570\u30011\u548c2\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token keyword\">for<\/span> x <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span>\r\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"\u6253\u5370\uff1a\"<\/span><span class=\"token punctuation\">,<\/span> x<span class=\"token punctuation\">)<\/span>\r\n\t\r\n<span class=\"token comment\"># \u8f93\u51fa<\/span>\r\n\r\n<span class=\"token comment\"># \u6253\u5370\uff1a0<\/span>\r\n<span class=\"token comment\"># \u6253\u5370\uff1a1<\/span>\r\n<span class=\"token comment\"># \u6253\u5370\uff1a2<\/span>\r\n<\/code><\/pre>\n<p>range\u51fd\u6570\u9664\u4e86\u8d77\u59cb\u503c\u548c\u7ed3\u675f\u503c\u4e4b\u5916\uff0c\u8fd8\u53ef\u4ee5\u63a5\u53d7\u53e6\u4e00\u4e2a\u53c2\u6570\u3002\u8fd9\u4e2a\u53c2\u6570\u662f\u6b65\u957f\u53c2\u6570\uff0c\u7528\u6765\u544a\u8bc9range\u51fd\u6570\u5728\u6bcf\u6b21\u8ba1\u6570\u4e4b\u95f4\u8df3\u8fc7\u591a\u5c11\u4e2a\u6570\u5b57\u3002<\/p>\n<p>\u5728\u4ee5\u4e0b\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4f7f\u7528\u4e86\u6570\u5b573\u4f5c\u4e3a\u6b65\u957f\uff0c\u4f60\u53ef\u4ee5\u770b\u5230\u8f93\u51fa\u7684\u6570\u5b57\u662f\u524d\u4e00\u4e2a\u6570\u5b57\u52a0\u4e0a3\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token keyword\">for<\/span> n <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span>\r\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"\u4f7f\u7528\u6b65\u957f\u6253\u5370\uff1a\"<\/span><span class=\"token punctuation\">,<\/span> n<span class=\"token punctuation\">)<\/span>\r\n\t\r\n<span class=\"token comment\"># \u8f93\u51fa<\/span>\r\n\r\n<span class=\"token comment\"># \u4f7f\u7528\u6b65\u957f\u6253\u5370\uff1a1<\/span>\r\n<span class=\"token comment\"># \u4f7f\u7528\u6b65\u957f\u6253\u5370\uff1a4<\/span>\r\n<span class=\"token comment\"># \u4f7f\u7528\u6b65\u957f\u6253\u5370\uff1a7<\/span>\r\n<\/code><\/pre>\n<h3>5. \u4f7f\u7528 for \u5faa\u73af\u7684\u4e2d\u65ad\u8bed\u53e5<\/h3>\n<h3>5. \u5728for\u5faa\u73af\u4e2d\u4f7f\u7528break\u8bed\u53e5<\/h3>\n<p>\u5f53\u6ee1\u8db3\u7279\u5b9a\u6761\u4ef6\u65f6\uff0cbreak\u8bed\u53e5\u7528\u4e8e\u63d0\u524d\u9000\u51fafor\u5faa\u73af\u3002\u5b83\u5728\u7279\u5b9a\u6761\u4ef6\u6ee1\u8db3\u65f6\u7528\u4e8e\u4e2d\u65adfor\u5faa\u73af\u7684\u6267\u884c\u3002<\/p>\n<p>\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u6570\u5b57\u5217\u8868\uff0c\u60f3\u8981\u68c0\u67e5\u67d0\u4e2a\u6570\u5b57\u662f\u5426\u5b58\u5728\u3002\u6211\u4eec\u53ef\u4ee5\u904d\u5386\u6570\u5b57\u5217\u8868\uff0c\u5982\u679c\u627e\u5230\u4e86\u76ee\u6807\u6570\u5b57\uff0c\u5c31\u7acb\u5373\u9000\u51fa\u5faa\u73af\uff0c\u56e0\u4e3a\u6211\u4eec\u4e0d\u9700\u8981\u7ee7\u7eed\u904d\u5386\u5269\u4f59\u7684\u5143\u7d20\u3002<\/p>\n<p>\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u5c06\u5728for\u5faa\u73af\u4e2d\u4f7f\u7528Python\u7684if else\u6761\u4ef6\u8bed\u53e5\u3002<\/p>\n<pre class=\"post-pre\"><code>nums <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">6<\/span><span class=\"token punctuation\">]<\/span>\r\n\r\nn <span class=\"token operator\">=<\/span> <span class=\"token number\">2<\/span>\r\n\r\nfound <span class=\"token operator\">=<\/span> <span class=\"token boolean\">False<\/span>\r\n<span class=\"token keyword\">for<\/span> num <span class=\"token keyword\">in<\/span> nums<span class=\"token punctuation\">:<\/span>\r\n    <span class=\"token keyword\">if<\/span> n <span class=\"token operator\">==<\/span> num<span class=\"token punctuation\">:<\/span>\r\n        found <span class=\"token operator\">=<\/span> <span class=\"token boolean\">True<\/span>\r\n        <span class=\"token keyword\">break<\/span>\r\n\r\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f'\u5217\u8868\u4e2d\u5305\u542b <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>n<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>found<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">'<\/span><\/span><span class=\"token punctuation\">)<\/span>\r\n\r\n<span class=\"token comment\"># \u8f93\u51fa<\/span>\r\n<span class=\"token comment\"># \u5217\u8868\u4e2d\u5305\u542b 2: True<\/span>\r\n\r\n<\/code><\/pre>\n<h3>6. \u5728for\u5faa\u73af\u4e2d\u4f7f\u7528continue\u8bed\u53e5<\/h3>\n<p>\u6211\u4eec\u53ef\u4ee5\u5728for\u5faa\u73af\u4e2d\u4f7f\u7528continue\u8bed\u53e5\uff0c\u4ee5\u8df3\u8fc7\u7279\u5b9a\u6761\u4ef6\u4e0b\u7684for\u5faa\u73af\u4f53\u6267\u884c\u3002<\/p>\n<p>\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u6570\u5b57\u5217\u8868\uff0c\u6211\u4eec\u60f3\u8981\u6253\u5370\u51fa\u6b63\u6570\u7684\u603b\u548c\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528continue\u8bed\u53e5\u6765\u8df3\u8fc7\u8d1f\u6570\u7684\u5904\u7406\uff0c\u53ea\u5bf9\u6b63\u6570\u8fdb\u884c\u6c42\u548c\u3002<\/p>\n<pre class=\"post-pre\"><code>nums <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">-<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">-<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">6<\/span><span class=\"token punctuation\">]<\/span>\r\n\r\nsum_positives <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span>\r\n\r\n<span class=\"token keyword\">for<\/span> num <span class=\"token keyword\">in<\/span> nums<span class=\"token punctuation\">:<\/span>\r\n    <span class=\"token keyword\">if<\/span> num <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">:<\/span>\r\n        <span class=\"token keyword\">continue<\/span>\r\n    sum_positives <span class=\"token operator\">+=<\/span> num\r\n\r\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f'\u6b63\u6570\u603b\u548c: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>sum_positives<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">'<\/span><\/span><span class=\"token punctuation\">)<\/span>\r\n\r\n<\/code><\/pre>\n<h3>7. \u5e26\u6709else\u5757\u7684Python for\u5faa\u73af<\/h3>\n<p>\u6211\u4eec\u53ef\u4ee5\u5728Python\u7684for\u5faa\u73af\u4e2d\u4f7f\u7528else\u5757\u3002\u53ea\u6709\u5f53for\u5faa\u73af\u6ca1\u6709\u88abbreak\u8bed\u53e5\u7ec8\u6b62\u65f6\uff0c\u624d\u4f1a\u6267\u884celse\u5757\u3002<\/p>\n<p>\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u51fd\u6570\uff0c\u53ea\u6709\u5f53\u6240\u6709\u7684\u6570\u5b57\u90fd\u662f\u5076\u6570\u65f6\uff0c\u624d\u6253\u5370\u51fa\u6570\u5b57\u7684\u603b\u548c\u3002<\/p>\n<p>\u5982\u679c\u5b58\u5728\u5947\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528break\u8bed\u53e5\u6765\u7ec8\u6b62for\u5faa\u73af\u3002\u6211\u4eec\u53ef\u4ee5\u5728else\u90e8\u5206\u6253\u5370\u603b\u548c\uff0c\u8fd9\u6837\u53ea\u6709\u5728for\u5faa\u73af\u6b63\u5e38\u6267\u884c\u65f6\u624d\u4f1a\u6253\u5370\u51fa\u6765\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token keyword\">def<\/span> <span class=\"token function\">print_sum_even_nums<\/span><span class=\"token punctuation\">(<\/span>even_nums<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span>\r\n    total <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span>\r\n\r\n    <span class=\"token keyword\">for<\/span> x <span class=\"token keyword\">in<\/span> even_nums<span class=\"token punctuation\">:<\/span>\r\n        <span class=\"token keyword\">if<\/span> x <span class=\"token operator\">%<\/span> <span class=\"token number\">2<\/span> <span class=\"token operator\">!=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">:<\/span>\r\n            <span class=\"token keyword\">break<\/span>\r\n\r\n        total <span class=\"token operator\">+=<\/span> x\r\n    <span class=\"token keyword\">else<\/span><span class=\"token punctuation\">:<\/span>\r\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"for\u5faa\u73af\u6b63\u5e38\u6267\u884c\"<\/span><span class=\"token punctuation\">)<\/span>\r\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f'\u6570\u5b57\u603b\u548c\u4e3a <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>total<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">'<\/span><\/span><span class=\"token punctuation\">)<\/span>\r\n\r\n\r\n<span class=\"token comment\"># \u8fd9\u5c06\u6253\u5370\u603b\u548c<\/span>\r\nprint_sum_even_nums<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">6<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">8<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span>\r\n\r\n<span class=\"token comment\"># \u7531\u4e8e\u5e8f\u5217\u4e2d\u5b58\u5728\u5947\u6570\uff0c\u8fd9\u4e0d\u4f1a\u6253\u5370\u603b\u548c<\/span>\r\nprint_sum_even_nums<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">8<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span>\r\n\r\n<span class=\"token comment\"># \u8f93\u51fa<\/span>\r\n\r\n<span class=\"token comment\"># for\u5faa\u73af\u6b63\u5e38\u6267\u884c<\/span>\r\n<span class=\"token comment\"># \u6570\u5b57\u603b\u548c\u4e3a 20<\/span>\r\n\r\n<\/code><\/pre>\n<h2>\u7ed3\u8bba<\/h2>\n<p>\u5728Python\u4e2d\uff0cfor\u5faa\u73af\u4e0e\u5176\u4ed6\u7f16\u7a0b\u8bed\u8a00\u975e\u5e38\u76f8\u4f3c\u3002\u6211\u4eec\u53ef\u4ee5\u5728for\u5faa\u73af\u4e2d\u4f7f\u7528break\u548ccontinue\u8bed\u53e5\u6765\u6539\u53d8\u6267\u884c\u7684\u6d41\u7a0b\u3002\u7136\u800c\uff0c\u5728Python\u4e2d\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u5728for\u5faa\u73af\u4e2d\u4f7f\u7528\u53ef\u9009\u7684else\u5757\u3002<\/p>\n<p>\u5e0c\u671b\u4f60\u4ece\u4e0a\u9762\u7684\u6559\u7a0b\u4e2d\u83b7\u5f97\u4e86\u4e00\u4e9b\u6709\u8da3\u7684\u60f3\u6cd5\u3002\u5982\u679c\u4f60\u6709\u4efb\u4f55\u95ee\u9898\uff0c\u8bf7\u5728\u4e0b\u65b9\u8bc4\u8bba\u4e2d\u544a\u8bc9\u6211\u4eec\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728Python\u4e2d\uff0cfor\u5faa\u73af\u662f\u4e00\u79cd\u8fed\u4ee3\u7ed3\u6784\u3002\u5982\u679c\u4f60\u6709\u4e00\u4e2a\u5e8f\u5217\u5bf9\u8c61\uff0c\u6bd4\u5982\u4e00\u4e2a\u5217\u8868\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528for\u5faa\u73af\u6765\u8fed\u4ee3\u5217\u8868 [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[478,32,280,1103,604],"class_list":{"0":"post-323","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-uncategorized","7":"tag-for","8":"tag-python","10":"tag-1103","11":"tag-604"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Python for\u5faa\u73af\u5b8c\u5168\u6307\u5357\uff1a\u4ece\u5165\u95e8\u5230\u7cbe\u901a\uff08\u9644\u5b9e\u4f8b\uff09 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u672c\u6587\u8be6\u7ec6\u4ecb\u7ecdPython 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for\u5faa\u73af\u5b8c\u5168\u6307\u5357\uff1a\u4ece\u5165\u95e8\u5230\u7cbe\u901a\uff08\u9644\u5b9e\u4f8b\uff09\" \/>\n<meta property=\"og:description\" content=\"\u672c\u6587\u8be6\u7ec6\u4ecb\u7ecdPython for\u5faa\u73af\u7684\u7528\u6cd5\uff0c\u4ece\u57fa\u672c\u8bed\u6cd5\u5230\u9ad8\u7ea7\u5e94\u7528\u6280\u5de7\u3002\u901a\u8fc7\u4e30\u5bcc\u7684\u4ee3\u7801\u793a\u4f8b\uff0c\u5e2e\u52a9\u521d\u5b66\u8005\u5feb\u901f\u638c\u63e1for\u5faa\u73af\u7684\u6838\u5fc3\u6982\u5ff5\uff0c\u5305\u62ec\u904d\u5386\u5e8f\u5217\u3001\u4f7f\u7528range()\u51fd\u6570\u3001\u5d4c\u5957\u5faa\u73af\u7b49\u5e38\u89c1\u573a\u666f\u3002\u9002\u5408Python\u7f16\u7a0b\u5165\u95e8\u5b66\u4e60\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/python\u7684for\u5faa\u73af\u9644\u5e26\u7b80\u5355\u793a\u4f8b\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-05-13T11:52:16+00:00\" 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