{"id":543,"date":"2023-12-02T15:26:52","date_gmt":"2023-08-21T14:05:32","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/python-valueerror%e5%bc%82%e5%b8%b8%e5%a4%84%e7%90%86%e7%a4%ba%e4%be%8b\/"},"modified":"2025-08-02T17:09:25","modified_gmt":"2025-08-02T09:09:25","slug":"python-valueerror%e5%bc%82%e5%b8%b8%e5%a4%84%e7%90%86%e7%a4%ba%e4%be%8b","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/python-valueerror%e5%bc%82%e5%b8%b8%e5%a4%84%e7%90%86%e7%a4%ba%e4%be%8b\/","title":{"rendered":"Python ValueError\u5f02\u5e38\u5b8c\u5168\u6307\u5357\uff1a\u5e38\u89c1\u9519\u8bef\u539f\u56e0\u4e0e\u89e3\u51b3\u65b9\u6cd5\u8be6\u89e3"},"content":{"rendered":"<h2>1. Python\u7684ValueError\u662f\u4ec0\u4e48\uff1f<\/h2>\n<p>\u5f53\u51fd\u6570\u63a5\u6536\u5230\u4e00\u4e2a\u5177\u6709\u6b63\u786e\u7c7b\u578b\u4f46\u4e0d\u5408\u9002\u503c\u7684\u53c2\u6570\u65f6\uff0cPython\u4f1a\u5f15\u53d1ValueError\u5f02\u5e38\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0d\u5e94\u8be5\u88ab\u66f4\u7cbe\u786e\u7684\u5f02\u5e38\uff08\u5982IndexError\uff09\u6240\u63cf\u8ff0\u3002<\/p>\n<h2>2. ValueError \u793a\u4f8b<\/h2>\n<p>\u5728\u8fdb\u884c\u6570\u5b66\u8fd0\u7b97\u65f6\uff0c\u4f8b\u5982\u5bf9\u8d1f\u6570\u6c42\u5e73\u65b9\u6839\uff0c\u60a8\u5c06\u4f1a\u9047\u5230ValueError\u5f02\u5e38\u3002<\/p>\n<pre class=\"post-pre\"><code>&gt;&gt;&gt; import math\r\n&gt;&gt;&gt; \r\n&gt;&gt;&gt; math.sqrt(-10)\r\nTraceback (most recent call last):\r\n  File \"&lt;stdin&gt;\", line 1, in &lt;module&gt;\r\nValueError: math domain error\r\n&gt;&gt;&gt; \r\n<\/code><\/pre>\n<h2>3. \u5904\u7406\u6570\u503c\u9519\u8bef\u5f02\u5e38<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528try-except\u5757\u6765\u5904\u7406ValueError\u5f02\u5e38\u7684\u7b80\u5355\u793a\u4f8b\u3002<\/p>\n<pre class=\"post-pre\"><code>import math\r\n\r\nx = int(input('\u8bf7\u8f93\u5165\u4e00\u4e2a\u6b63\u6570\uff1a\\n'))\r\n\r\ntry:\r\n    print(f'{x}\u7684\u5e73\u65b9\u6839\u662f{math.sqrt(x)}')\r\nexcept ValueError as ve:\r\n    print(f'\u60a8\u8f93\u5165\u7684{x}\u4e0d\u662f\u4e00\u4e2a\u6b63\u6570\u3002')\r\n<\/code><\/pre>\n<p>\u8fd9\u662f\u7a0b\u5e8f\u5728\u4e0d\u540c\u7c7b\u578b\u7684\u8f93\u5165\u4e0b\u7684\u8f93\u51fa\u7ed3\u679c\u3002<\/p>\n<pre class=\"post-pre\"><code>\u8bf7\u8f93\u5165\u4e00\u4e2a\u6b63\u6570\uff1a\r\n16\r\n16\u7684\u5e73\u65b9\u6839\u662f4.0\r\n\r\n\u8bf7\u8f93\u5165\u4e00\u4e2a\u6b63\u6570\uff1a\r\n-10\r\n\u60a8\u8f93\u5165\u7684-10\u4e0d\u662f\u4e00\u4e2a\u6b63\u6570\u3002\r\n\r\n\u8bf7\u8f93\u5165\u4e00\u4e2a\u6b63\u6570\uff1a\r\nabc\r\nTraceback (most recent call last):\r\n  File \"\/Users\/scdev\/Documents\/PycharmProjects\/hello-world\/scdev\/errors\/valueerror_examples.py\", line 11, in &lt;module&gt;\r\n    x = int(input('\u8bf7\u8f93\u5165\u4e00\u4e2a\u6b63\u6570\uff1a\\n'))\r\nValueError: invalid literal for int() with base 10: 'abc'\r\n<\/code><\/pre>\n<p>\u6211\u4eec\u7684\u7a0b\u5e8f\u53ef\u4ee5\u5728int()\u548cmath.sqrt()\u51fd\u6570\u4e2d\u5f15\u53d1ValueError\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u5d4c\u5957\u7684try-except\u5757\u6765\u5904\u7406\u5b83\u4eec\u3002\u4e0b\u9762\u662f\u66f4\u65b0\u540e\u7684\u4ee3\u7801\u7247\u6bb5\uff0c\u53ef\u4ee5\u5904\u7406\u6240\u6709\u7684ValueError\u60c5\u51b5\u3002<\/p>\n<pre class=\"post-pre\"><code>import math\r\n\r\ntry:\r\n    x = int(input('\u8bf7\u8f93\u5165\u4e00\u4e2a\u6b63\u6570\uff1a\\n'))\r\n    try:\r\n        print(f'{x}\u7684\u5e73\u65b9\u6839\u662f{math.sqrt(x)}')\r\n    except ValueError as ve:\r\n        print(f'\u60a8\u8f93\u5165\u7684{x}\u4e0d\u662f\u4e00\u4e2a\u6b63\u6570\u3002')\r\nexcept ValueError as ve:\r\n    print('\u60a8\u5e94\u8be5\u8f93\u5165\u4e00\u4e2a\u6b63\u6570\u3002')\r\n<\/code><\/pre>\n<h2>4. \u5728\u51fd\u6570\u4e2d\u5f15\u53d1ValueError<\/h2>\n<p>\u8fd9\u91cc\u6709\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\uff0c\u6211\u4eec\u4e3a\u6b63\u786e\u7c7b\u578b\u4f46\u4e0d\u5408\u9002\u7684\u503c\u7684\u8f93\u5165\u53c2\u6570\u5f15\u53d1\u4e86ValueError\u3002<\/p>\n<pre class=\"post-pre\"><code>import math\r\n\r\n\r\ndef num_stats(x):\r\n    if not isinstance(x, int):\r\n        raise TypeError('\u53ea\u5904\u7406\u6570\u5b57')\r\n    if x &lt; 0:\r\n        raise ValueError('\u53ea\u5904\u7406\u6b63\u6570')\r\n\r\n    print(f'{x}\u7684\u5e73\u65b9\u662f{x * x}')\r\n    print(f'{x}\u7684\u5e73\u65b9\u6839\u662f{math.sqrt(x)}')\r\n<\/code><\/pre>\n<h2>5. \u53c2\u8003\u6587\u732e<\/h2>\n<ul class=\"post-ul\">\n<li>Python\u5f02\u5e38\u5904\u7406<\/li>\n<li>Python\u5b98\u65b9\u6587\u6863\uff1aValueError<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>1. Python\u7684ValueError\u662f\u4ec0\u4e48\uff1f \u5f53\u51fd\u6570\u63a5\u6536\u5230\u4e00\u4e2a\u5177\u6709\u6b63\u786e\u7c7b\u578b\u4f46\u4e0d\u5408\u9002\u503c\u7684\u53c2\u6570\u65f6\uff0cPython [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1594,280,1107,1596,1595],"class_list":{"0":"post-543","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-uncategorized","7":"tag-python","11":"tag-valueerror"},"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 ValueError\u5f02\u5e38\u5b8c\u5168\u6307\u5357\uff1a\u5e38\u89c1\u9519\u8bef\u539f\u56e0\u4e0e\u89e3\u51b3\u65b9\u6cd5\u8be6\u89e3 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5168\u9762\u89e3\u6790Python ValueError\u5f02\u5e38\u7684\u4ea7\u751f\u539f\u56e0\u3001\u5e38\u89c1\u573a\u666f\u53ca\u6700\u4f73\u5904\u7406\u65b9\u6cd5\u3002\u901a\u8fc7\u5b9e\u7528\u793a\u4f8b\u548c\u4ee3\u7801\u6f14\u793a\uff0c\u5e2e\u52a9\u5f00\u53d1\u8005\u638c\u63e1Python\u5f02\u5e38\u5904\u7406\u6280\u5de7\uff0c\u63d0\u9ad8\u4ee3\u7801\u5065\u58ee\u6027\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/python-valueerror\u5f02\u5e38\u5904\u7406\u793a\u4f8b\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Python ValueError\u5f02\u5e38\u5b8c\u5168\u6307\u5357\uff1a\u5e38\u89c1\u9519\u8bef\u539f\u56e0\u4e0e\u89e3\u51b3\u65b9\u6cd5\u8be6\u89e3\" \/>\n<meta property=\"og:description\" content=\"\u5168\u9762\u89e3\u6790Python ValueError\u5f02\u5e38\u7684\u4ea7\u751f\u539f\u56e0\u3001\u5e38\u89c1\u573a\u666f\u53ca\u6700\u4f73\u5904\u7406\u65b9\u6cd5\u3002\u901a\u8fc7\u5b9e\u7528\u793a\u4f8b\u548c\u4ee3\u7801\u6f14\u793a\uff0c\u5e2e\u52a9\u5f00\u53d1\u8005\u638c\u63e1Python\u5f02\u5e38\u5904\u7406\u6280\u5de7\uff0c\u63d0\u9ad8\u4ee3\u7801\u5065\u58ee\u6027\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/python-valueerror\u5f02\u5e38\u5904\u7406\u793a\u4f8b\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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