<\/p>\n
\u5728 Python \u7684\u7269\u4ef6\u5c0e\u5411\u7a0b\u5f0f\u8a2d\u8a08\u4e2d\uff0c`deleter()` \u51fd\u6578\u662f\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u529f\u80fd\uff0c\u5b83\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5c0d\u7269\u4ef6\u7684\u5c6c\u6027\u9032\u884c\u522a\u9664\u64cd\u4f5c\uff0c\u800c\u4e0d\u6703\u5f71\u97ff\u5230\u7269\u4ef6\u672c\u8eab\u3002\u9019\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u9748\u6d3b\u5730\u7ba1\u7406\u7269\u4ef6\u7684\u5c6c\u6027\uff0c\u4e26\u4e14\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u6e1b\u5c11\u7a0b\u5f0f\u78bc\u7684\u8907\u96dc\u5ea6\u3002<\/p>\n
### \u4ec0\u9ebc\u662f deleter() \u51fd\u6578\uff1f<\/p>\n
`deleter()` \u51fd\u6578\u901a\u5e38\u8207 `@property` \u88dd\u98fe\u5668\u4e00\u8d77\u4f7f\u7528\uff0c\u5141\u8a31\u958b\u767c\u8005\u5b9a\u7fa9\u4e00\u500b\u5c6c\u6027\u4e26\u63d0\u4f9b\u5c0d\u8a72\u5c6c\u6027\u7684\u522a\u9664\u65b9\u6cd5\u3002\u9019\u662f Python \u63d0\u4f9b\u7684\u4e00\u7a2e\u5c01\u88dd\u6a5f\u5236\uff0c\u80fd\u5920\u63a7\u5236\u5c6c\u6027\u8a2a\u554f\u7684\u884c\u70ba\u3002<\/p>\n
### \u6700\u65b0\u8a9e\u6cd5\u8207\u4f7f\u7528\u65b9\u5f0f<\/p>\n
\u4ee5\u4e0b\u662f `deleter()` \u51fd\u6578\u7684\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n
“`python
\n@property
\ndef deleter(self):
\n del self.attribute
\n“`<\/p>\n
\u5728\u9019\u88e1\uff0c`self` \u4ee3\u8868\u7269\u4ef6\u672c\u8eab\uff0c\u800c `attribute` \u662f\u4f60\u60f3\u8981\u522a\u9664\u7684\u5c6c\u6027\u3002<\/p>\n
### \u5be6\u4f5c\u7bc4\u4f8b<\/p>\n
\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba `Person` \u7684\u985e\u5225\uff0c\u4e26\u4e14\u5728\u9019\u500b\u985e\u5225\u4e2d\u6709\u4e00\u500b\u540d\u70ba `name` \u7684\u5c6c\u6027\u3002\u6211\u5011\u5c07\u4f7f\u7528 `deleter()` \u51fd\u6578\u4f86\u522a\u9664\u9019\u500b `name` \u5c6c\u6027\uff1a<\/p>\n
“`python
\nclass Person:
\n def __init__(self, name):
\n self._name = name # \u6ce8\u610f\uff1a\u4f7f\u7528\u4e0b\u5283\u7dda\u958b\u982d\u7684\u5c6c\u6027\u4ee5\u907f\u514d\u76f4\u63a5\u8a2a\u554f<\/p>\n
@property
\n def name(self):
\n return self._name<\/p>\n
@name.setter
\n def name(self, value):
\n self._name = value<\/p>\n
@name.deleter
\n def name(self):
\n del self._name<\/p>\n
# \u5be6\u4f5c\u7bc4\u4f8b
\np = Person(‘John’)
\nprint(p.name) # \u8f38\u51fa: John<\/p>\n
del p.name<\/p>\n
try:
\n print(p.name) # \u5c07\u5f15\u767c AttributeError
\nexcept AttributeError as e:
\n print(e) # \u8f38\u51fa: ‘Person’ object has no attribute ‘_name’
\n“`<\/p>\n
\u5728\u9019\u6bb5\u7a0b\u5f0f\u78bc\u4e2d\uff0c\u6211\u5011\u9996\u5148\u5275\u5efa\u4e86\u4e00\u500b `Person` \u985e\u5225\uff0c\u5176\u4e2d `name` \u5c6c\u6027\u900f\u904e `@property` \u88dd\u98fe\u5668\u9032\u884c\u5c01\u88dd\u3002\u6211\u5011\u53ef\u4ee5\u900f\u904e\u8a2d\u7f6e\u5668\u548c\u522a\u9664\u5668\u4f86\u7ba1\u7406\u9019\u500b\u5c6c\u6027\u3002\u7576\u6211\u5011\u522a\u9664 `name` \u5c6c\u6027\u5f8c\uff0c\u518d\u6b21\u8a2a\u554f\u6642\u6703\u5f15\u767c `AttributeError`\uff0c\u9019\u662f\u56e0\u70ba\u8a72\u5c6c\u6027\u5df2\u7d93\u88ab\u522a\u9664\u3002<\/p>\n
### \u932f\u8aa4\u6392\u9664<\/p>\n
– **AttributeError**: \u7576\u4f60\u5617\u8a66\u8a2a\u554f\u5df2\u88ab\u522a\u9664\u7684\u5c6c\u6027\u6642\uff0c\u6703\u51fa\u73fe\u6b64\u932f\u8aa4\u3002\u8acb\u78ba\u4fdd\u5728\u522a\u9664\u5c6c\u6027\u5f8c\uff0c\u4e0d\u518d\u8a66\u5716\u8a2a\u554f\u8a72\u5c6c\u6027\u3002
\n– **NameError**: \u82e5\u4f60\u5728\u985e\u5225\u4e2d\u672a\u6b63\u78ba\u5b9a\u7fa9\u5c6c\u6027\uff0c\u5247\u53ef\u80fd\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002\u52d9\u5fc5\u78ba\u8a8d\u5c6c\u6027\u540d\u7a31\u6b63\u78ba\u4e14\u5df2\u521d\u59cb\u5316\u3002<\/p>\n
### \u5ef6\u4f38\u61c9\u7528<\/p>\n
`deleter()` \u51fd\u6578\u5728\u8655\u7406\u5927\u578b\u61c9\u7528\u7a0b\u5f0f\u6642\u975e\u5e38\u6709\u7528\uff0c\u5c24\u5176\u662f\u7576\u4f60\u9700\u8981\u52d5\u614b\u7ba1\u7406\u7269\u4ef6\u72c0\u614b\u6642\u3002\u901a\u904e\u5408\u7406\u4f7f\u7528 `deleter()`\uff0c\u53ef\u4ee5\u63d0\u9ad8\u7a0b\u5f0f\u7684\u53ef\u8b80\u6027\u548c\u53ef\u7dad\u8b77\u6027\u3002<\/p>\n
\u6b32\u4e86\u89e3\u66f4\u591a Python \u7684\u7269\u4ef6\u5c0e\u5411\u7279\u6027\uff0c\u60a8\u53ef\u4ee5\u53c3\u8003 [\u9019\u7bc7\u6559\u5b78\u6587\u7ae0](https:\/\/vocus.cc\/article\/5fabc1dbfd89780001dc8f5a)\u3002<\/p>\n
### \u7d50\u8ad6<\/p>\n
`deleter()` \u51fd\u6578\u662f Python \u4e2d\u4e00\u500b\u5f37\u5927\u7684\u7279\u6027\uff0c\u8b93\u958b\u767c\u8005\u80fd\u5920\u9748\u6d3b\u5730\u63a7\u5236\u7269\u4ef6\u5c6c\u6027\u3002\u900f\u904e\u672c\u6587\u7684\u4ecb\u7d39\u8207\u5be6\u4f5c\u7bc4\u4f8b\uff0c\u60a8\u61c9\u8a72\u80fd\u5920\u66f4\u597d\u5730\u7406\u89e3\u4e26\u61c9\u7528\u9019\u500b\u529f\u80fd\u3002<\/p>\n
### Q&A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/p>\n
**Q1: \u70ba\u4ec0\u9ebc\u6211\u6703\u9047\u5230 AttributeError\uff1f**
\nA1: \u7576\u4f60\u5617\u8a66\u8a2a\u554f\u5df2\u7d93\u88ab\u522a\u9664\u7684\u5c6c\u6027\u6642\uff0c\u6703\u767c\u751f\u6b64\u932f\u8aa4\u3002\u78ba\u4fdd\u5728\u522a\u9664\u5c6c\u6027\u5f8c\uff0c\u4e0d\u518d\u8a66\u5716\u8a2a\u554f\u3002<\/p>\n
**Q2: \u5982\u4f55\u5e73\u8861\u4f7f\u7528 getter\u3001setter \u548c deleter\uff1f**
\nA2: \u4f7f\u7528\u9019\u4e09\u500b\u65b9\u6cd5\u53ef\u4ee5\u66f4\u597d\u5730\u63a7\u5236\u5c6c\u6027\u7684\u8a2a\u554f\u6b0a\u9650\u3002\u5728\u9700\u8981\u6642\u4f7f\u7528 setter \u548c deleter \u4f86\u4fdd\u8b77\u5c6c\u6027\u4e0d\u88ab\u96a8\u610f\u4fee\u6539\u6216\u522a\u9664\u3002<\/p>\n
**Q3: deleter() \u662f\u5426\u652f\u6301\u591a\u500b\u5c6c\u6027\uff1f**
\nA3: \u662f\u7684\uff0c\u4f60\u53ef\u4ee5\u70ba\u6bcf\u500b\u5c6c\u6027\u5b9a\u7fa9\u81ea\u5df1\u7684 deleter \u65b9\u6cd5\uff0c\u9019\u6a23\u53ef\u4ee5\u9748\u6d3b\u7ba1\u7406\u6bcf\u500b\u5c6c\u6027\u7684\u522a\u9664\u884c\u70ba\u3002
\n—<\/p>\n","protected":false},"excerpt":{"rendered":"
Python\u4e2d\u7684deleter()\u51fd\u6578\u53ef\u4ee5\u7528\u4f86\u522a\u9664\u7279\u5b9a\u7269\u4ef6\u7684\u5c6c\u6027\uff0c\u4e26\u4e14\u53ef\u4ee5\u63a7\u5236\u7269\u4ef6\u7684\u5b58\u53d6\u6b0a\u9650\u3002\u672c\u6587\u5c07\u4ecb\u7d39deleter()\u51fd\u6578\u7684\u4f7f\u7528\u65b9\u6cd5\uff0c\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528\u5b83\u4f86\u63a7\u5236\u7269\u4ef6\u7684\u5b58\u53d6\u6b0a\u9650\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-3420","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-Ta","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3420","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=3420"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3420\/revisions"}],"predecessor-version":[{"id":3421,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3420\/revisions\/3421"}],"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=3420"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=3420"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=3420"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}