{"id":2950,"date":"2025-05-29T17:19:23","date_gmt":"2025-06-04T09:20:23","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=2950"},"modified":"2025-06-04T17:19:23","modified_gmt":"2025-06-04T09:20:23","slug":"%e4%ba%86%e8%a7%a3python%e4%b8%ad%e7%9a%84setattr%e5%87%bd%e6%95%b8","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/python\/%e4%ba%86%e8%a7%a3python%e4%b8%ad%e7%9a%84setattr%e5%87%bd%e6%95%b8\/","title":{"rendered":"\u6df1\u5165\u4e86\u89e3 Python \u7684 setattr() \u51fd\u6578\uff1a\u7528\u65bc\u52d5\u614b\u8a2d\u7f6e\u5c0d\u8c61\u5c6c\u6027\u7684\u6700\u4f73\u5be6\u8e10"},"content":{"rendered":"

<\/p>\n

\u5728 Python \u4e2d\uff0c`setattr()` \u51fd\u6578\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u7528\u65bc\u52d5\u614b\u8a2d\u7f6e\u5c0d\u8c61\u7684\u5c6c\u6027\u3002\u7121\u8ad6\u662f\u6a21\u7d44\u3001\u985e\u3001\u5be6\u4f8b\u9084\u662f\u5176\u4ed6\u5c0d\u8c61\uff0c`setattr()` \u90fd\u80fd\u8f15\u9b06\u5730\u70ba\u5b83\u5011\u8a2d\u7f6e\u5c6c\u6027\u3002\u672c\u6587\u5c07\u5e36\u60a8\u6df1\u5165\u4e86\u89e3 `setattr()` \u7684\u7528\u6cd5\uff0c\u4e26\u63d0\u4f9b\u793a\u4f8b\u53ca\u6700\u4f73\u5be6\u8e10\uff0c\u4ee5\u4fbf\u60a8\u5728 Python \u958b\u767c\u4e2d\u9748\u6d3b\u904b\u7528\u3002<\/p>\n

setattr() \u51fd\u6578\u7684\u8a9e\u6cd5<\/h2>\n

`setattr()` \u51fd\u6578\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n

“`python
\nsetattr(object, name, value)
\n“`<\/p>\n

– **object**\uff1a\u8981\u8a2d\u7f6e\u5c6c\u6027\u7684\u5c0d\u8c61\u3002
\n– **name**\uff1a\u8981\u8a2d\u7f6e\u7684\u5c6c\u6027\u540d\u7a31\uff0c\u5fc5\u9808\u662f\u5b57\u7b26\u4e32\u985e\u578b\u3002
\n– **value**\uff1a\u8981\u8a2d\u7f6e\u7684\u5c6c\u6027\u503c\u3002<\/p>\n

setattr() \u51fd\u6578\u7684\u793a\u4f8b<\/h2>\n

\u4e0b\u9762\u662f\u4e00\u500b\u4f7f\u7528 `setattr()` \u51fd\u6578\u7684\u793a\u4f8b\uff1a<\/p>\n

“`python
\nclass Person:
\n pass<\/p>\n

person = Person()<\/p>\n

# \u8a2d\u7f6e\u5c6c\u6027 name
\nsetattr(person, ‘name’, ‘John’)<\/p>\n

# \u8a2d\u7f6e\u5c6c\u6027 age
\nsetattr(person, ‘age’, 20)<\/p>\n

# \u8a2d\u7f6e\u5c6c\u6027 gender
\nsetattr(person, ‘gender’, ‘male’)<\/p>\n

# \u8a2a\u554f\u5c6c\u6027 name
\nprint(getattr(person, ‘name’)) # \u8f38\u51fa: John<\/p>\n

# \u8a2a\u554f\u5c6c\u6027 age
\nprint(getattr(person, ‘age’)) # \u8f38\u51fa: 20<\/p>\n

# \u8a2a\u554f\u5c6c\u6027 gender
\nprint(getattr(person, ‘gender’)) # \u8f38\u51fa: male
\n“`<\/p>\n

\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 `setattr()` \u51fd\u6578\u70ba `Person` \u5c0d\u8c61\u8a2d\u7f6e\u4e86\u4e09\u500b\u5c6c\u6027\uff1a`name`\u3001`age` \u548c `gender`\u3002\u7136\u5f8c\uff0c\u6211\u5011\u4f7f\u7528 `getattr()` \u51fd\u6578\u7372\u53d6\u4e86\u9019\u4e09\u500b\u5c6c\u6027\u7684\u503c\uff0c\u4e26\u5c07\u5176\u6253\u5370\u51fa\u4f86\u3002<\/p>\n

\u932f\u8aa4\u6392\u9664<\/h2>\n

\u5728\u4f7f\u7528 `setattr()` \u6642\uff0c\u60a8\u53ef\u80fd\u6703\u9047\u5230\u4ee5\u4e0b\u5e38\u898b\u932f\u8aa4\uff1a<\/p>\n

1. **AttributeError**\uff1a\u5982\u679c\u60a8\u5617\u8a66\u8a2d\u7f6e\u7684\u5c6c\u6027\u540d\u7a31\u4e0d\u7b26\u5408\u5c0d\u8c61\u7684\u8a2d\u8a08\uff0c\u5247\u6703\u5f15\u767c\u6b64\u932f\u8aa4\u3002\u8acb\u78ba\u4fdd\u5c0d\u8c61\u5df2\u7d93\u5b9a\u7fa9\u4e86\u53ef\u4ee5\u8a2d\u7f6e\u7684\u5c6c\u6027\u3002
\n2. **TypeError**\uff1a\u5982\u679c `name` \u53c3\u6578\u4e0d\u662f\u5b57\u7b26\u4e32\u985e\u578b\uff0c\u5247\u6703\u5f15\u767c\u6b64\u932f\u8aa4\u3002\u8acb\u78ba\u4fdd\u5c6c\u6027\u540d\u7a31\u70ba\u5b57\u7b26\u4e32\u3002<\/p>\n

\u5ef6\u4f38\u61c9\u7528<\/h2>\n

`setattr()` \u51fd\u6578\u4e0d\u50c5\u9650\u65bc\u8a2d\u7f6e\u57fa\u672c\u5c6c\u6027\uff0c\u9084\u53ef\u4ee5\u7528\u65bc\u8a2d\u7f6e\u66f4\u8907\u96dc\u7684\u5c6c\u6027\u3002\u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 `setattr()` \u5c07\u5c0d\u8c61\u7684\u5c6c\u6027\u8a2d\u7f6e\u70ba\u51fd\u6578\u6216\u5176\u4ed6\u5c0d\u8c61\uff0c\u9019\u4f7f\u5f97 Python \u7684\u52d5\u614b\u7279\u6027\u5f97\u4ee5\u5145\u5206\u767c\u63ee\u3002<\/p>\n

\u6b64\u5916\uff0c\u60a8\u4e5f\u53ef\u4ee5\u7d50\u5408 `getattr()` \u548c `hasattr()` \u51fd\u6578\u4f86\u6aa2\u67e5\u5c6c\u6027\u662f\u5426\u5b58\u5728\uff0c\u5f9e\u800c\u9032\u884c\u66f4\u9748\u6d3b\u7684\u7de8\u7a0b\u3002<\/p>\n

\u7e3d\u7d50<\/h2>\n

`setattr()` \u51fd\u6578\u662f Python \u4e2d\u8a2d\u7f6e\u5c0d\u8c61\u5c6c\u6027\u7684\u4e00\u500b\u91cd\u8981\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u65bc\u8a2d\u7f6e\u4efb\u4f55\u5c0d\u8c61\u7684\u5c6c\u6027\u3002\u901a\u904e\u52d5\u614b\u8a2d\u7f6e\u5c6c\u6027\uff0c\u60a8\u53ef\u4ee5\u4f7f\u4ee3\u78bc\u66f4\u5177\u9748\u6d3b\u6027\u548c\u53ef\u64f4\u5c55\u6027\u3002\u4f7f\u7528 `getattr()` \u51fd\u6578\u53ef\u4ee5\u8f15\u9b06\u7372\u53d6\u8a2d\u7f6e\u7684\u5c6c\u6027\u503c\uff0c\u9019\u6a23\u7684\u7d44\u5408\u4f7f\u5f97 Python \u7684\u7269\u4ef6\u5c0e\u5411\u7de8\u7a0b\u66f4\u52a0\u65b9\u4fbf\u3002<\/p>\n

\u5982\u9700\u9032\u4e00\u6b65\u4e86\u89e3 Python \u7684\u5176\u4ed6\u6280\u5de7\u548c\u51fd\u6578\uff0c\u60a8\u53ef\u4ee5\u53c3\u8003 [\u9019\u88e1\u7684\u6559\u5b78\u6587\u7ae0](https:\/\/vocus.cc) \u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n

Q&A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/h2>\n

**Q1: `setattr()` \u53ef\u4ee5\u7528\u65bc\u6240\u6709\u5c0d\u8c61\u55ce\uff1f**
\nA: \u662f\u7684\uff0c`setattr()` \u53ef\u4ee5\u7528\u65bc\u8a2d\u7f6e\u4efb\u4f55\u5c0d\u8c61\u7684\u5c6c\u6027\uff0c\u5305\u62ec\u6a21\u7d44\u3001\u985e\u548c\u5be6\u4f8b\u3002<\/p>\n

**Q2: \u5982\u4f55\u6aa2\u67e5\u5c0d\u8c61\u662f\u5426\u5177\u6709\u67d0\u500b\u5c6c\u6027\uff1f**
\nA: \u60a8\u53ef\u4ee5\u4f7f\u7528 `hasattr(object, name)` \u51fd\u6578\u4f86\u6aa2\u67e5\u5c0d\u8c61\u662f\u5426\u64c1\u6709\u6307\u5b9a\u7684\u5c6c\u6027\u3002<\/p>\n

**Q3: `setattr()` \u662f\u5426\u6703\u8986\u84cb\u5df2\u5b58\u5728\u7684\u5c6c\u6027\uff1f**
\nA: \u662f\u7684\uff0c\u5982\u679c\u5c6c\u6027\u5df2\u5b58\u5728\uff0c`setattr()` \u5c07\u6703\u8986\u84cb\u5176\u503c\u3002<\/p>\n

—<\/p>\n","protected":false},"excerpt":{"rendered":"

\u4e86\u89e3Python\u4e2d\u7684setattr()\u51fd\u6578\uff0c\u5b83\u53ef\u4ee5\u7528\u65bc\u8a2d\u7f6e\u5c0d\u8c61\u7684\u7279\u5b9a\u5c6c\u6027\uff0c\u4e26\u7b26\u5408GoogleSEO\u539f\u5247\u3002\u901a\u904e\u4f7f\u7528setattr()\u51fd\u6578\uff0c\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u7ba1\u7406\u5c0d\u8c61\u7684\u5c6c\u6027\uff0c\u4e26\u63d0\u9ad8\u7a0b\u5e8f\u7684\u6548\u7387\u3002<\/p>\n","protected":false},"author":1,"featured_media":2518,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[18],"tags":[15],"class_list":["post-2950","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-python","tag-python"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/badgameshow.com\/steven\/wp-content\/uploads\/2022\/12\/DALL\u00b7E-2022-12-28-14.25.55-\u62f7\u8c9d2.png","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-LA","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/2950","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/comments?post=2950"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/2950\/revisions"}],"predecessor-version":[{"id":2951,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/2950\/revisions\/2951"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media\/2518"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=2950"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=2950"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=2950"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}