<\/p>\n
\u5728 Python \u7684\u7269\u4ef6\u5c0e\u5411\u7a0b\u5f0f\u8a2d\u8a08\u4e2d\uff0c`deleter()` \u51fd\u5f0f\u8b93\u958b\u767c\u8005\u80fd\u5920\u522a\u9664\u7269\u4ef6\u7684\u5c6c\u6027\uff0c\u800c\u4e0d\u6703\u5f71\u97ff\u5230\u7269\u4ef6\u672c\u8eab\u3002\u9019\u5c0d\u65bc\u7ba1\u7406\u7269\u4ef6\u7684\u72c0\u614b\u548c\u884c\u70ba\u975e\u5e38\u91cd\u8981\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u63a7\u5236\u5c6c\u6027\u53ef\u898b\u6027\u548c\u751f\u547d\u9031\u671f\u7684\u5834\u5408\u3002<\/p>\n
### deleter() \u51fd\u5f0f\u7684\u8a9e\u6cd5<\/p>\n
`deleter()` \u51fd\u5f0f\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n
“`python
\n@property
\ndef deleter(self):
\n del self.attribute
\n“`<\/p>\n
\u9019\u88e1\u7684 `self` \u4ee3\u8868\u7269\u4ef6\u672c\u8eab\uff0c\u800c `attribute` \u5247\u662f\u8981\u522a\u9664\u7684\u5c6c\u6027\u3002<\/p>\n
### \u4f7f\u7528 deleter() \u51fd\u5f0f\u7684\u7bc4\u4f8b<\/p>\n
\u4ee5\u4e0b\u662f\u4e00\u500b\u5b8c\u6574\u7684\u7bc4\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528 `deleter()` \u51fd\u5f0f\u4f86\u7ba1\u7406\u5c6c\u6027\uff1a<\/p>\n
“`python
\nclass Person:
\n def __init__(self, name):
\n self._name = name # \u4f7f\u7528\u79c1\u6709\u8b8a\u6578\u4f86\u5b58\u5132\u540d\u7a31<\/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 print(“\u522a\u9664\u540d\u7a31\u5c6c\u6027”)
\n del self._name<\/p>\n
# \u5275\u5efa Person \u7269\u4ef6
\np = Person(‘John’)
\nprint(p.name) # \u8f38\u51fa: John<\/p>\n
# \u522a\u9664 name \u5c6c\u6027
\ndel p.name<\/p>\n
# \u5617\u8a66\u8a2a\u554f\u5df2\u522a\u9664\u7684\u5c6c\u6027\u5c07\u5f15\u767c\u932f\u8aa4
\ntry:
\n print(p.name)
\nexcept AttributeError as e:
\n print(f”\u932f\u8aa4: {e}”) # \u8f38\u51fa: \u932f\u8aa4: ‘Person’ object has no attribute ‘_name’
\n“`<\/p>\n
\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b `Person` \u985e\u5225\uff0c\u5176\u4e2d\u5305\u542b\u4e00\u500b\u540d\u7a31\u5c6c\u6027\u3002\u4f7f\u7528 `deleter()` \u51fd\u5f0f\uff0c\u6211\u5011\u80fd\u5920\u5728\u522a\u9664\u5c6c\u6027\u6642\u57f7\u884c\u984d\u5916\u7684\u884c\u70ba\uff08\u5982\u5370\u51fa\u8a0a\u606f\uff09\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u4e0d\u50c5\u63d0\u9ad8\u4e86\u4ee3\u78bc\u7684\u53ef\u8b80\u6027\uff0c\u4e5f\u8b93\u5c6c\u6027\u7684\u7ba1\u7406\u66f4\u52a0\u9748\u6d3b\u3002<\/p>\n
### \u932f\u8aa4\u6392\u9664<\/p>\n
\u5728\u4f7f\u7528 `deleter()` \u51fd\u5f0f\u6642\uff0c\u53ef\u80fd\u6703\u9047\u5230\u4ee5\u4e0b\u5e38\u898b\u932f\u8aa4\uff1a<\/p>\n
– **AttributeError**: \u7576\u5617\u8a66\u8a2a\u554f\u4e00\u500b\u5df2\u522a\u9664\u7684\u5c6c\u6027\u6642\uff0c\u6703\u5f15\u767c\u6b64\u932f\u8aa4\u3002\u9019\u8868\u660e\u8a72\u5c6c\u6027\u5df2\u7d93\u4e0d\u5b58\u5728\uff0c\u958b\u767c\u8005\u9700\u78ba\u8a8d\u5c6c\u6027\u662f\u5426\u5b58\u5728\u65bc\u7269\u4ef6\u4e2d\u3002<\/p>\n
### \u5ef6\u4f38\u61c9\u7528<\/p>\n
`deleter()` \u51fd\u5f0f\u53ef\u4ee5\u8207\u5176\u4ed6 Python \u7279\u6027\u7d50\u5408\u4f7f\u7528\uff0c\u5982\uff1a<\/p>\n
– **\u88dd\u98fe\u5668**\uff1a\u53ef\u4ee5\u4f7f\u7528\u5176\u4ed6\u88dd\u98fe\u5668\u4f86\u63a7\u5236\u5c6c\u6027\u7684\u8a2a\u554f\u6b0a\u9650\u3002
\n– **\u5c6c\u6027\u9a57\u8b49**\uff1a\u5728\u5c6c\u6027\u88ab\u4fee\u6539\u6216\u522a\u9664\u524d\uff0c\u53ef\u4ee5\u52a0\u5165\u9a57\u8b49\u908f\u8f2f\u3002<\/p>\n
\u9019\u4e9b\u529f\u80fd\u4f7f\u5f97 `deleter()` \u4e0d\u50c5\u9650\u65bc\u7c21\u55ae\u7684\u5c6c\u6027\u522a\u9664\uff0c\u800c\u662f\u80fd\u5920\u9032\u884c\u66f4\u8907\u96dc\u7684\u6578\u64da\u8655\u7406\u3002<\/p>\n
\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc Python \u7684\u7269\u4ef6\u5c0e\u5411\u7a0b\u5f0f\u8a2d\u8a08\uff0c\u60a8\u53ef\u4ee5\u53c3\u8003\u9019\u7bc7[Python \u7269\u4ef6\u5c0e\u5411\u7a0b\u5f0f\u8a2d\u8a08\u6559\u5b78](https:\/\/vocus.cc\/article\/5f5d3d8a9d7a9f001c5a5c7a)\u3002<\/p>\n
### \u5e38\u898b\u554f\u984c\u89e3\u7b54 (Q&A)<\/p>\n
#### Q1: `deleter()` \u548c `setter()` \u6709\u4ec0\u9ebc\u5340\u5225\uff1f
\nA1: `deleter()` \u7528\u65bc\u5b9a\u7fa9\u522a\u9664\u5c6c\u6027\u7684\u884c\u70ba\uff0c\u800c `setter()` \u7528\u65bc\u5b9a\u7fa9\u8a2d\u5b9a\u5c6c\u6027\u503c\u7684\u884c\u70ba\u3002\u5169\u8005\u90fd\u53ef\u4ee5\u4f7f\u7528 @property \u88dd\u98fe\u5668\u9032\u884c\u88dd\u98fe\u3002<\/p>\n
#### Q2: \u5982\u4f55\u8655\u7406\u522a\u9664\u5c6c\u6027\u6642\u7684\u4f8b\u5916\u72c0\u6cc1\uff1f
\nA2: \u5728 `deleter()` \u4e2d\uff0c\u53ef\u4ee5\u6dfb\u52a0\u932f\u8aa4\u8655\u7406\u908f\u8f2f\uff08\u5982 try-except \u584a\uff09\u4f86\u6355\u7372\u53ef\u80fd\u51fa\u73fe\u7684\u932f\u8aa4\uff0c\u5f9e\u800c\u63d0\u9ad8\u7a0b\u5e8f\u7684\u5065\u58ef\u6027\u3002<\/p>\n
#### Q3: \u4f7f\u7528 `deleter()` \u6709\u54ea\u4e9b\u6700\u4f73\u5be6\u8e10\uff1f
\nA3: \u5728\u4f7f\u7528 `deleter()` \u6642\uff0c\u78ba\u4fdd\u6e05\u6670\u5730\u5b9a\u7fa9\u4f55\u6642\u4ee5\u53ca\u70ba\u4ec0\u9ebc\u8981\u522a\u9664\u5c6c\u6027\uff0c\u4e26\u8003\u616e\u63d0\u4f9b\u5fc5\u8981\u7684\u932f\u8aa4\u8655\u7406\u548c\u65e5\u8a8c\u8a18\u9304\uff0c\u4ee5\u4fbf\u65bc\u8abf\u8a66\u548c\u7dad\u8b77\u3002<\/p>\n
—<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3Python\u4e2d\u7684deleter()\u51fd\u6578\uff0c\u5b83\u53ef\u4ee5\u8b93\u4f60\u66f4\u6709\u6548\u5730\u522a\u9664\u7269\u4ef6\u4e2d\u7684\u5c6c\u6027\uff0c\u4e26\u78ba\u4fdd\u7269\u4ef6\u7684\u5b89\u5168\u6027\u3002\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39deleter()\u51fd\u6578\u7684\u4f7f\u7528\u65b9\u6cd5\uff0c\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528\u5b83\u4f86\u63d0\u9ad8\u7a0b\u5f0f\u78bc\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-3274","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-QO","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3274","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=3274"}],"version-history":[{"count":2,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3274\/revisions"}],"predecessor-version":[{"id":12881,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3274\/revisions\/12881"}],"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=3274"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=3274"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=3274"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}