<\/p>\n
\u5728 Python \u4e2d\uff0c`__getattribute__()` \u65b9\u6cd5\u662f\u4e00\u500b\u975e\u5e38\u5f37\u5927\u7684\u51fd\u5f0f\uff0c\u5b83\u5141\u8a31\u4f60\u5f9e\u7269\u4ef6\u4e2d\u53d6\u5f97\u5c6c\u6027\u503c\uff0c\u800c\u4e0d\u9700\u8981\u660e\u78ba\u6307\u5b9a\u5c6c\u6027\u540d\u7a31\u3002\u9019\u500b\u65b9\u6cd5\u5728\u5c0d\u8c61\u5c0e\u5411\u7de8\u7a0b\u4e2d\u975e\u5e38\u5be6\u7528\uff0c\u7279\u5225\u662f\u7576\u4f60\u9700\u8981\u52d5\u614b\u8a2a\u554f\u5c6c\u6027\u6642\u3002<\/p>\n
### `__getattribute__()` \u65b9\u6cd5\u8a9e\u6cd5<\/p>\n
“`python
\nobject.__getattribute__(attribute)
\n“`<\/p>\n
– **object**\uff1a\u4f60\u60f3\u8981\u53d6\u5f97\u5c6c\u6027\u503c\u7684\u7269\u4ef6\u3002
\n– **attribute**\uff1a\u4f60\u60f3\u8981\u53d6\u5f97\u7684\u5c6c\u6027\u540d\u7a31\u3002<\/p>\n
### \u4f7f\u7528\u7bc4\u4f8b<\/p>\n
\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u7bc4\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528 `__getattribute__()` \u65b9\u6cd5\uff1a<\/p>\n
“`python
\nclass Person:
\n def __init__(self, name, age):
\n self.name = name
\n self.age = age<\/p>\n
person = Person(“John”, 30)<\/p>\n
# \u4f7f\u7528 __getattribute__() \u53d6\u5f97 name \u5c6c\u6027
\nname = person.__getattribute__(“name”)
\n# \u4f7f\u7528 __getattribute__() \u53d6\u5f97 age \u5c6c\u6027
\nage = person.__getattribute__(“age”)<\/p>\n
print(“Name:”, name)
\nprint(“Age:”, age)
\n“`<\/p>\n
\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b `Person` \u985e\u5225\u4e26\u5275\u5efa\u4e86\u4e00\u500b `Person` \u7269\u4ef6\u3002\u7136\u5f8c\uff0c\u6211\u5011\u4f7f\u7528 `__getattribute__()` \u65b9\u6cd5\u4f86\u7372\u53d6 `name` \u548c `age` \u7684\u5c6c\u6027\u503c\uff0c\u4e26\u5c07\u5b83\u5011\u5370\u51fa\u4f86\u3002<\/p>\n
### \u53d6\u5f97\u7269\u4ef6\u7684\u65b9\u6cd5<\/p>\n
`__getattribute__()` \u65b9\u6cd5\u4e0d\u50c5\u53ef\u4ee5\u53d6\u5f97\u5c6c\u6027\uff0c\u9084\u53ef\u4ee5\u7528\u4f86\u7372\u53d6\u7269\u4ef6\u7684\u65b9\u6cd5\uff1a<\/p>\n
“`python
\nclass Person:
\n def __init__(self, name, age):
\n self.name = name
\n self.age = age<\/p>\n
def say_hello(self):
\n print(“Hello, my name is”, self.name)<\/p>\n
person = Person(“John”, 30)<\/p>\n
# \u4f7f\u7528 __getattribute__() \u53d6\u5f97 say_hello() \u65b9\u6cd5
\nsay_hello_method = person.__getattribute__(“say_hello”)
\n# \u547c\u53eb say_hello() \u65b9\u6cd5
\nsay_hello_method()
\n“`<\/p>\n
\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 `__getattribute__()` \u65b9\u6cd5\u4f86\u7372\u53d6 `say_hello()` \u65b9\u6cd5\uff0c\u7136\u5f8c\u547c\u53eb\u5b83\u3002<\/p>\n
### `__getattribute__()` \u65b9\u6cd5\u7684\u512a\u9ede<\/p>\n
`__getattribute__()` \u65b9\u6cd5\u7684\u4e3b\u8981\u512a\u9ede\u662f\u5b83\u5141\u8a31\u52d5\u614b\u5730\u53d6\u5f97\u7269\u4ef6\u7684\u5c6c\u6027\u503c\uff0c\u9019\u5c0d\u65bc\u958b\u767c\u52d5\u614b\u7684\u61c9\u7528\u7a0b\u5f0f\u975e\u5e38\u6709\u7528\u3002\u4f60\u53ef\u4ee5\u5728\u904b\u884c\u6642\u6839\u64da\u9700\u8981\u7372\u53d6\u5c6c\u6027\u6216\u65b9\u6cd5\uff0c\u589e\u5f37\u4e86\u7a0b\u5f0f\u7684\u9748\u6d3b\u6027\u3002<\/p>\n
### \u932f\u8aa4\u6392\u9664<\/p>\n
\u5728\u4f7f\u7528 `__getattribute__()` \u65b9\u6cd5\u6642\uff0c\u53ef\u80fd\u6703\u9047\u5230 `AttributeError`\uff0c\u9019\u901a\u5e38\u662f\u56e0\u70ba\u8a66\u5716\u8a2a\u554f\u4e00\u500b\u4e0d\u5b58\u5728\u7684\u5c6c\u6027\u3002\u9019\u88e1\u662f\u4e00\u500b\u7c21\u55ae\u7684\u932f\u8aa4\u8655\u7406\u7bc4\u4f8b\uff1a<\/p>\n
“`python
\ntry:
\n non_existent_attr = person.__getattribute__(“non_existent”)
\nexcept AttributeError:
\n print(“\u5c6c\u6027\u4e0d\u5b58\u5728\uff01”)
\n“`<\/p>\n
### \u5ef6\u4f38\u61c9\u7528<\/p>\n
`__getattribute__()` \u65b9\u6cd5\u53ef\u4ee5\u8207 Python \u7684\u5176\u4ed6\u7279\u6027\u7d50\u5408\u4f7f\u7528\uff0c\u4f8b\u5982\uff0c\u7d50\u5408 `__setattr__()` \u65b9\u6cd5\u4f86\u5be6\u73fe\u66f4\u8907\u96dc\u7684\u5c6c\u6027\u7ba1\u7406\uff0c\u6216\u4f7f\u7528\u88dd\u98fe\u5668\u4f86\u589e\u5f37\u5c6c\u6027\u8a2a\u554f\u7684\u529f\u80fd\u3002<\/p>\n
### \u7e3d\u7d50<\/p>\n
\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u6df1\u5165\u63a2\u8a0e\u4e86 Python \u4e2d\u7684 `__getattribute__()` \u65b9\u6cd5\u3002\u9019\u500b\u65b9\u6cd5\u4e0d\u50c5\u80fd\u5920\u8b93\u4f60\u8f15\u9b06\u7372\u53d6\u7269\u4ef6\u7684\u5c6c\u6027\u503c\uff0c\u9084\u80fd\u52d5\u614b\u5730\u547c\u53eb\u65b9\u6cd5\uff0c\u986f\u8457\u63d0\u5347\u4e86 Python \u5728\u5c0d\u8c61\u5c0e\u5411\u7de8\u7a0b\u4e2d\u7684\u9748\u6d3b\u6027\u548c\u53ef\u64f4\u5c55\u6027\u3002<\/p>\n
\u6b64\u5916\uff0c\u82e5\u60f3\u9032\u4e00\u6b65\u4e86\u89e3 Python \u7684\u5176\u4ed6\u7279\u6027\uff0c\u5efa\u8b70\u53c3\u8003 [vocus.cc \u7684 Python \u6559\u5b78\u6587\u7ae0](https:\/\/vocus.cc)\u3002<\/p>\n
—<\/p>\n
### \u5e38\u898b\u554f\u984c\u89e3\u7b54 Q&A<\/p>\n
**Q1: `__getattribute__()` \u548c `getattr()` \u6709\u4ec0\u9ebc\u5340\u5225\uff1f**
\nA1: `__getattribute__()` \u662f\u4e00\u500b\u5167\u5efa\u65b9\u6cd5\uff0c\u7528\u65bc\u8655\u7406\u5c6c\u6027\u7684\u8a2a\u554f\uff0c\u800c `getattr()` \u662f\u4e00\u500b\u5167\u5efa\u51fd\u5f0f\uff0c\u5b83\u53ef\u4ee5\u7528\u4f86\u76f4\u63a5\u7372\u53d6\u7269\u4ef6\u7684\u5c6c\u6027\u503c\u3002`getattr()` \u6703\u81ea\u52d5\u8655\u7406\u4e0d\u5b58\u5728\u7684\u5c6c\u6027\uff0c\u4e0d\u6703\u5f15\u767c `AttributeError`\u3002<\/p>\n
**Q2: \u6211\u53ef\u4ee5\u5728 `__getattribute__()` \u4e2d\u4f7f\u7528\u5176\u4ed6\u5c6c\u6027\u55ce\uff1f**
\nA2: \u662f\u7684\uff0c\u4f60\u53ef\u4ee5\u5728 `__getattribute__()` \u4e2d\u8a2a\u554f\u5176\u4ed6\u5c6c\u6027\u3002\u4e0d\u904e\uff0c\u9700\u5c0f\u5fc3\u907f\u514d\u7121\u9650\u905e\u6b78\uff0c\u56e0\u70ba\u5c0d\u5c6c\u6027\u7684\u8a2a\u554f\u6703\u518d\u6b21\u8abf\u7528 `__getattribute__()`\u3002<\/p>\n
**Q3: \u5982\u4f55\u5728 `__getattribute__()` \u4e2d\u6dfb\u52a0\u984d\u5916\u7684\u908f\u8f2f\uff1f**
\nA3: \u4f60\u53ef\u4ee5\u5728 `__getattribute__()` \u65b9\u6cd5\u5167\u90e8\u6dfb\u52a0\u4efb\u4f55\u4f60\u9700\u8981\u7684\u908f\u8f2f\uff0c\u4f8b\u5982\uff0c\u8a18\u9304\u8a2a\u554f\u7684\u5c6c\u6027\u540d\u7a31\u6216\u6839\u64da\u7279\u5b9a\u689d\u4ef6\u8fd4\u56de\u4e0d\u540c\u7684\u503c\u3002<\/p>\n
—<\/p>\n","protected":false},"excerpt":{"rendered":"
getattribute()\u51fd\u6578\u662fPython\u4e2d\u7684\u4e00\u500b\u91cd\u8981\u51fd\u6578\uff0c\u5b83\u53ef\u4ee5\u8b93\u4f60\u8a2a\u554f\u7269\u4ef6\u7684\u5c6c\u6027\uff0c\u4e26\u63d0\u4f9b\u4e00\u500b\u7c21\u55ae\u7684\u65b9\u6cd5\u4f86\u8a2a\u554f\u7269\u4ef6\u7684\u5c6c\u6027\u3002\u672c\u6587\u5c07\u4ecb\u7d39getattribute()\u51fd\u6578\u7684\u4f7f\u7528\u65b9\u6cd5\uff0c\u4ee5\u53ca\u5b83\u5982\u4f55\u5e6b\u52a9\u4f60\u66f4\u597d\u5730\u7ba1\u7406\u7269\u4ef6\u7684\u5c6c\u6027\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-3308","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-Rm","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3308","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=3308"}],"version-history":[{"count":2,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3308\/revisions"}],"predecessor-version":[{"id":12869,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3308\/revisions\/12869"}],"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=3308"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=3308"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=3308"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}