{"id":820,"date":"2023-09-13T17:08:34","date_gmt":"2022-10-13T13:47:10","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/python%e7%9a%84getattr%e5%87%bd%e6%95%b0%e5%8f%af%e4%bb%a5%e7%94%a8%e4%b8%ad%e6%96%87%e8%a7%a3%e9%87%8a%e4%b8%ba%ef%bc%9a%e8%8e%b7%e5%8f%96%e5%af%b9%e8%b1%a1%e5%b1%9e%e6%80%a7%e7%9a%84%e5%80%bc\/"},"modified":"2025-08-03T10:45:30","modified_gmt":"2025-08-03T02:45:30","slug":"python%e7%9a%84getattr%e5%87%bd%e6%95%b0%e5%8f%af%e4%bb%a5%e7%94%a8%e4%b8%ad%e6%96%87%e8%a7%a3%e9%87%8a%e4%b8%ba%ef%bc%9a%e8%8e%b7%e5%8f%96%e5%af%b9%e8%b1%a1%e5%b1%9e%e6%80%a7%e7%9a%84%e5%80%bc","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/python%e7%9a%84getattr%e5%87%bd%e6%95%b0%e5%8f%af%e4%bb%a5%e7%94%a8%e4%b8%ad%e6%96%87%e8%a7%a3%e9%87%8a%e4%b8%ba%ef%bc%9a%e8%8e%b7%e5%8f%96%e5%af%b9%e8%b1%a1%e5%b1%9e%e6%80%a7%e7%9a%84%e5%80%bc\/","title":{"rendered":"\u6df1\u5165\u7406\u89e3Python getattr()\u51fd\u6570\uff1a\u52a8\u6001\u83b7\u53d6\u5bf9\u8c61\u5c5e\u6027\u7684\u65b9\u6cd5"},"content":{"rendered":"<p>\u5728\u4e4b\u524d\u7684\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u5b66\u4e60\u4e86Python\u7cfb\u7edf\u547d\u4ee4\u7684\u76f8\u5173\u5185\u5bb9\u3002\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u8ba8\u8bbaPython\u7684getattr()\u51fd\u6570\u3002<\/p>\n<h2>Python\u7684getattr()\u51fd\u6570<\/h2>\n<p>Python\u7684getattr()\u51fd\u6570\u7528\u4e8e\u83b7\u53d6\u5bf9\u8c61\u5c5e\u6027\u7684\u503c\uff0c\u5982\u679c\u672a\u627e\u5230\u8be5\u5bf9\u8c61\u7684\u5c5e\u6027\uff0c\u5219\u8fd4\u56de\u9ed8\u8ba4\u503c\u3002\u4f7f\u7528\u9ed8\u8ba4\u503c\u662f\u60a8\u53ef\u80fd\u9700\u8981\u4f7f\u7528Python\u7684getattr()\u51fd\u6570\u7684\u4e3b\u8981\u539f\u56e0\u4e4b\u4e00\u3002\u56e0\u6b64\uff0c\u5728\u5f00\u59cb\u672c\u6559\u7a0b\u4e4b\u524d\uff0c\u8ba9\u6211\u4eec\u5148\u4e86\u89e3\u4e00\u4e0bPython\u7684getattr()\u51fd\u6570\u7684\u57fa\u672c\u8bed\u6cd5\u3002<\/p>\n<pre class=\"post-pre\"><code>getattr(object_name, attribute_name[, default_value])\r\n<\/code><\/pre>\n<h3>Python getattr() \u793a\u4f8b<\/h3>\n<p>\u5728\u672c\u90e8\u5206\u4e2d\uff0c\u6211\u4eec\u5c06\u5b66\u4e60\u5982\u4f55\u4f7f\u7528getattr()\u51fd\u6570\u8bbf\u95ee\u5bf9\u8c61\u7684\u5c5e\u6027\u503c\u3002\u5047\u8bbe\u6211\u4eec\u6b63\u5728\u7f16\u5199\u4e00\u4e2a\u540d\u4e3aStudent\u7684\u7c7b\u3002Student\u7c7b\u7684\u57fa\u672c\u5c5e\u6027\u5305\u62ecstudent_id\u548cstudent_name\u3002\u73b0\u5728\u6211\u4eec\u5c06\u521b\u5efa\u4e00\u4e2aStudent\u7c7b\u7684\u5bf9\u8c61\u5e76\u8bbf\u95ee\u5176\u5c5e\u6027\u3002<\/p>\n<pre class=\"post-pre\"><code>class Student:\r\n    student_id=\"\"\r\n    student_name=\"\"\r\n\r\n    # \u521d\u59cb\u5316\u6784\u9020\u51fd\u6570\u4ee5\u8bbe\u7f6e\u503c\r\n    def __init__(self):\r\n        self.student_id = \"101\"\r\n        self.student_name = \"Adam Lam\"\r\n\r\nstudent = Student()\r\n# \u4f7f\u7528getattr()\u51fd\u6570\u83b7\u53d6\u5c5e\u6027\u503c\r\nprint('\\ngetattr : \u5b66\u751f\u7684\u59d3\u540d\u662f =', getattr(student, \"student_name\"))\r\n\r\n# \u4f46\u4f60\u4e5f\u53ef\u4ee5\u8fd9\u6837\u8bbf\u95ee\r\nprint('\u4f20\u7edf\u65b9\u5f0f: \u5b66\u751f\u7684\u59d3\u540d\u662f =', student.student_name)\r\n<\/code><\/pre>\n<div class=\"post-image-container\">\n    <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65648cd6a4b2f92e6c733672\/7-0.png\" class=\"post-images\" alt=\"python getattr\u793a\u4f8b\" title=\"Python getattr\u51fd\u6570\u793a\u4f8b\">\n<\/div>\n<h3>Python getattr() \u51fd\u6570\u7684\u9ed8\u8ba4\u503c<\/h3>\n<p>\u5728\u672c\u8282\u4e2d\uff0c\u6211\u4eec\u5c06\u5b66\u4e60\u5982\u4f55\u4f7f\u7528Python\u7684getattr()\u51fd\u6570\u7684\u9ed8\u8ba4\u503c\u9009\u9879\u3002\u5982\u679c\u60a8\u60f3\u8bbf\u95ee\u4e0d\u5c5e\u4e8e\u5bf9\u8c61\u7684\u4efb\u4f55\u5c5e\u6027\uff0c\u53ef\u4ee5\u4f7f\u7528getattr()\u7684\u9ed8\u8ba4\u503c\u9009\u9879\u3002\u4f8b\u5982\uff0c\u5982\u679c\u5b66\u751f\u5bf9\u8c61\u4e2d\u4e0d\u5b58\u5728student_cgpa\u5c5e\u6027\uff0c\u90a3\u4e48\u5c06\u663e\u793a\u4e00\u4e2a\u9ed8\u8ba4\u503c\u3002\u5728\u4e0b\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5c06\u770b\u5230\u9ed8\u8ba4\u503c\u7684\u4f7f\u7528\u793a\u4f8b\u3002\u540c\u65f6\uff0c\u6211\u4eec\u4e5f\u4f1a\u4e86\u89e3\u5982\u679c\u5c5e\u6027\u4e0d\u5b58\u5728\u4e14\u672a\u4f7f\u7528\u9ed8\u8ba4\u503c\u9009\u9879\u4f1a\u53d1\u751f\u4ec0\u4e48\u60c5\u51b5\u3002<\/p>\n<pre class=\"post-pre\"><code>class Student:\r\n    student_id=\"\"\r\n    student_name=\"\"\r\n\r\n    # \u521d\u59cb\u5316\u6784\u9020\u51fd\u6570\u4ee5\u8bbe\u7f6e\u503c\r\n    def __init__(self):\r\n        self.student_id = \"101\"\r\n        self.student_name = \"Adam Lam\"\r\n\r\nstudent = Student()\r\n# \u4f7f\u7528\u9ed8\u8ba4\u503c\u9009\u9879\r\nprint('\u4f7f\u7528\u9ed8\u8ba4\u503c : \u5b66\u751f\u7684\u7ee9\u70b9\u662f =', getattr(student, \"student_cgpa\", 3.00))\r\n# \u4e0d\u4f7f\u7528\u9ed8\u8ba4\u503c\r\ntry:\r\n    print('\u4e0d\u4f7f\u7528\u9ed8\u8ba4\u503c : \u5b66\u751f\u7684\u7ee9\u70b9\u662f =', getattr(student, \"student_cgpa\"))\r\nexcept AttributeError:\r\n    print(\"\u5c5e\u6027\u672a\u627e\u5230 :(\")\r\n\r\n<\/code><\/pre>\n<p>\u8fd0\u884c\u4e0a\u8ff0\u4ee3\u7801\u540e\uff0c\u4f60\u5c06\u5f97\u5230\u5982\u4e0b\u8f93\u51fa\uff1a<\/p>\n<pre class=\"post-pre\"><code>\u4f7f\u7528\u9ed8\u8ba4\u503c : \u5b66\u751f\u7684\u7ee9\u70b9\u662f = 3.0\r\n\u5c5e\u6027\u672a\u627e\u5230 :(\r\n<\/code><\/pre>\n<p>\u5f53\u8c03\u7528getattr()\u51fd\u6570\u65f6\uff0c\u5982\u679c\u6ca1\u6709\u63d0\u4f9b\u9ed8\u8ba4\u503c\uff0c\u5219\u4f1a\u5f15\u53d1AttributeError\u9519\u8bef\u3002<\/p>\n<h3>\u4f7f\u7528Python\u7684getattr()\u51fd\u6570\u7684\u539f\u56e0<\/h3>\n<p>\u4f7f\u7528Python\u7684getattr()\u51fd\u6570\u7684\u4e3b\u8981\u539f\u56e0\u662f\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5c5e\u6027\u540d\u4f5c\u4e3a\u5b57\u7b26\u4e32\u6765\u83b7\u53d6\u503c\u3002\u56e0\u6b64\uff0c\u60a8\u53ef\u4ee5\u4ece\u63a7\u5236\u53f0\u624b\u52a8\u8f93\u5165\u5c5e\u6027\u540d\u5230\u7a0b\u5e8f\u4e2d\u3002\u540c\u6837\uff0c\u5982\u679c\u627e\u4e0d\u5230\u5c5e\u6027\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u4e00\u4e9b\u9ed8\u8ba4\u503c\uff0c\u8fd9\u4f7f\u6211\u4eec\u80fd\u591f\u5904\u7406\u4e00\u4e9b\u4e0d\u5b8c\u6574\u7684\u6570\u636e\u3002\u6b64\u5916\uff0c\u5982\u679c\u60a8\u7684Student\u7c7b\u4ecd\u5728\u5f00\u53d1\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528getattr()\u51fd\u6570\u6765\u5b8c\u6210\u5176\u4ed6\u4ee3\u7801\u3002\u4e00\u65e6Student\u7c7b\u5177\u6709\u8be5\u5c5e\u6027\uff0c\u5b83\u5c06\u81ea\u52a8\u83b7\u53d6\u8be5\u5c5e\u6027\uff0c\u800c\u4e0d\u4f7f\u7528\u9ed8\u8ba4\u503c\u3002\u4ee5\u4e0a\u5c31\u662f\u5173\u4e8ePython getattr()\u51fd\u6570\u7684\u5168\u90e8\u5185\u5bb9\u3002\u5982\u679c\u60a8\u5bf9\u6b64\u6709\u4efb\u4f55\u7591\u95ee\uff0c\u8bf7\u5728\u4e0b\u65b9\u7684\u8bc4\u8bba\u6846\u4e2d\u7559\u8a00\u3002\u53c2\u8003\u8d44\u6599\uff1aPython\u5b98\u65b9\u6587\u6863<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u4e4b\u524d\u7684\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u5b66\u4e60\u4e86Python\u7cfb\u7edf\u547d\u4ee4\u7684\u76f8\u5173\u5185\u5bb9\u3002\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u8ba8\u8bbaPython\u7684getatt [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[2167,1370,1102,280,2168],"class_list":{"0":"post-820","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-uncategorized","7":"tag-getattr","8":"tag-python","11":"tag-2168"},"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>\u6df1\u5165\u7406\u89e3Python getattr()\u51fd\u6570\uff1a\u52a8\u6001\u83b7\u53d6\u5bf9\u8c61\u5c5e\u6027\u7684\u65b9\u6cd5 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u6df1\u5165\u89e3\u6790Python 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