class Person:<\/p>\n def __init__(self, name, age):<\/p>\n
self.name = name # \u516c\u6709\u5c5e\u6027<\/p>\n
self._age = age # \u53d7\u4fdd\u62a4\u5c5e\u6027<\/p>\n
self.__ssn = "123-45-6789" # \u79c1\u6709\u5c5e\u6027<\/p>\n
def get_ssn(self):<\/p>\n
return self.__ssn<\/p>\n
person = Person("John", 30)<\/p>\n
print(person.name) # \u8f93\u51fa: John<\/p>\n
print(person._age) # \u8f93\u51fa: 30<\/p>\n
print(person.get_ssn()) # \u8f93\u51fa: 123-45-6789<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u516d\u3001\u5c5e\u6027\u7684\u52a8\u6001\u6dfb\u52a0\u548c\u5220\u9664<\/h3>\n<\/p>\n
Python\u7684\u7075\u6d3b\u6027\u5141\u8bb8\u6211\u4eec\u52a8\u6001\u6dfb\u52a0\u548c\u5220\u9664\u5bf9\u8c61\u7684\u5c5e\u6027\u3002\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684setattr()<\/code>\u51fd\u6570\u52a8\u6001\u6dfb\u52a0\u5c5e\u6027\uff0c\u4f7f\u7528delattr()<\/code>\u51fd\u6570\u5220\u9664\u5c5e\u6027\u3002<\/p>\n<\/p>\nclass Person:<\/p>\n def __init__(self, name):<\/p>\n
self.name = name<\/p>\n
person = Person("John")<\/p>\n
setattr(person, "age", 30) # \u52a8\u6001\u6dfb\u52a0\u5c5e\u6027<\/p>\n
print(person.age) # \u8f93\u51fa: 30<\/p>\n
delattr(person, "age") # \u5220\u9664\u5c5e\u6027<\/p>\n
print(person.age) # AttributeError: 'Person' object has no attribute 'age'<\/strong><\/h2>\n<\/code><\/pre>\n<\/p>\n
\u4e03\u3001\u5c5e\u6027\u7684\u9ed8\u8ba4\u503c<\/h3>\n<\/p>\n
\u5728\u5b9a\u4e49\u7c7b\u7684\u5c5e\u6027\u65f6\uff0c\u53ef\u4ee5\u4e3a\u5c5e\u6027\u8bbe\u7f6e\u9ed8\u8ba4\u503c\u3002\u5982\u679c\u5728\u521b\u5efa\u5bf9\u8c61\u65f6\u6ca1\u6709\u4e3a\u67d0\u4e2a\u5c5e\u6027\u63d0\u4f9b\u503c\uff0c\u8be5\u5c5e\u6027\u5c06\u4f7f\u7528\u9ed8\u8ba4\u503c\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
class Person:<\/p>\n def __init__(self, name, age=25):<\/p>\n
self.name = name<\/p>\n
self.age = age<\/p>\n
person1 = Person("John")<\/p>\n
print(person1.age) # \u8f93\u51fa: 25<\/p>\n
person2 = Person("Jane", 30)<\/p>\n
print(person2.age) # \u8f93\u51fa: 30<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u516b\u3001\u5c5e\u6027\u7684\u7c7b\u578b\u6ce8\u89e3<\/h3>\n<\/p>\n
Python 3.5\u53ca\u4ee5\u4e0a\u7248\u672c\u652f\u6301\u7c7b\u578b\u6ce8\u89e3\uff0c\u53ef\u4ee5\u5728\u5b9a\u4e49\u5c5e\u6027\u65f6\u4e3a\u5176\u6dfb\u52a0\u7c7b\u578b\u6ce8\u89e3\u3002\u7c7b\u578b\u6ce8\u89e3\u6709\u52a9\u4e8e\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u9759\u6001\u7c7b\u578b\u68c0\u67e5\u3002<\/p>\n<\/p>\n
class Person:<\/p>\n def __init__(self, name: str, age: int):<\/p>\n
self.name: str = name<\/p>\n
self.age: int = age<\/p>\n
person = Person("John", 30)<\/p>\n
print(person.name) # \u8f93\u51fa: John<\/p>\n
print(person.age) # \u8f93\u51fa: 30<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e5d\u3001\u5c5e\u6027\u7684\u53ea\u8bfb\u6027<\/h3>\n<\/p>\n
\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u5e0c\u671b\u5c5e\u6027\u662f\u53ea\u8bfb\u7684\uff0c\u4e0d\u5141\u8bb8\u5916\u90e8\u4fee\u6539\u3002\u53ef\u4ee5\u901a\u8fc7\u5b9a\u4e49\u53ea\u8bfb\u5c5e\u6027\u6765\u5b9e\u73b0\u8fd9\u4e00\u70b9\u3002\u53ea\u8bfb\u5c5e\u6027\u53ef\u4ee5\u4f7f\u7528property<\/code>\u88c5\u9970\u5668\u6765\u5b9a\u4e49\u3002<\/p>\n<\/p>\nclass Person:<\/p>\n def __init__(self, name, age):<\/p>\n
self._name = name<\/p>\n
self._age = age<\/p>\n
@property<\/p>\n
def name(self):<\/p>\n
return self._name<\/p>\n
@property<\/p>\n
def age(self):<\/p>\n
return self._age<\/p>\n
person = Person("John", 30)<\/p>\n
print(person.name) # \u8f93\u51fa: John<\/p>\n
print(person.age) # \u8f93\u51fa: 30<\/p>\n
person.name = "Jane" # AttributeError: can't set attribute<\/strong><\/h2>\n<\/code><\/pre>\n<\/p>\n
\u5341\u3001\u5c5e\u6027\u7684\u63cf\u8ff0\u5668<\/h3>\n<\/p>\n
\u63cf\u8ff0\u5668\u662f\u4e00\u4e2a\u5b9e\u73b0\u4e86\u7279\u6b8a\u65b9\u6cd5\u7684\u5bf9\u8c61\uff0c\u7528\u4e8e\u7ba1\u7406\u53e6\u4e00\u4e2a\u5bf9\u8c61\u7684\u5c5e\u6027\u8bbf\u95ee\u3002\u63cf\u8ff0\u5668\u53ef\u4ee5\u901a\u8fc7\u5b9a\u4e49__get__()<\/code>\u3001__set__()<\/code>\u548c__delete__()<\/code>\u65b9\u6cd5\u6765\u5b9e\u73b0\u3002\u63cf\u8ff0\u5668\u5728\u5c5e\u6027\u8bbf\u95ee\u63a7\u5236\u548c\u6570\u636e\u9a8c\u8bc1\u7b49\u65b9\u9762\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\nclass Descriptor:<\/p>\n def __init__(self, name):<\/p>\n
self.name = name<\/p>\n
def __get__(self, instance, owner):<\/p>\n
return instance.__dict__[self.name]<\/p>\n
def __set__(self, instance, value):<\/p>\n
instance.__dict__[self.name] = value<\/p>\n
def __delete__(self, instance):<\/p>\n
del instance.__dict__[self.name]<\/p>\n
class Person:<\/p>\n
name = Descriptor("name")<\/p>\n
age = Descriptor("age")<\/p>\n
def __init__(self, name, age):<\/p>\n
self.name = name<\/p>\n
self.age = age<\/p>\n
person = Person("John", 30)<\/p>\n
print(person.name) # \u8f93\u51fa: John<\/p>\n
person.name = "Jane"<\/p>\n
print(person.name) # \u8f93\u51fa: Jane<\/p>\n
del person.name<\/p>\n
print(person.name) # AttributeError: 'Person' object has no attribute 'name'<\/strong><\/h2>\n<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u4ee5\u4e0a\u65b9\u6cd5\u548c\u6280\u5de7\uff0c\u6211\u4eec\u53ef\u4ee5\u5168\u9762\u4e86\u89e3\u548c\u64cd\u4f5cPython\u5bf9\u8c61\u7684\u5c5e\u6027\uff0c\u4ece\u800c\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u6269\u5c55\u6027\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n \u5982\u4f55\u5224\u65ad\u4e00\u4e2aPython\u5c5e\u6027\u662f\u5426\u503c\u5f97\u4f7f\u7528\uff1f<\/strong>
\u5728\u8bc4\u4f30\u4e00\u4e2aPython\u5c5e\u6027\u7684\u4ef7\u503c\u65f6\uff0c\u53ef\u4ee5\u8003\u8651\u591a\u4e2a\u56e0\u7d20\uff0c\u5305\u62ec\u5176\u529f\u80fd\u7684\u5b8c\u6574\u6027\u3001\u6027\u80fd\u3001\u53ef\u7ef4\u62a4\u6027\u4ee5\u53ca\u793e\u533a\u652f\u6301\u3002\u67e5\u770b\u8be5\u5c5e\u6027\u7684\u6587\u6863\uff0c\u4e86\u89e3\u5176\u4f7f\u7528\u6848\u4f8b\u548c\u6700\u4f73\u5b9e\u8df5\uff0c\u80fd\u5e2e\u52a9\u4f60\u5224\u65ad\u5176\u662f\u5426\u7b26\u5408\u4f60\u7684\u9700\u6c42\u3002\u6b64\u5916\uff0c\u67e5\u9605\u7528\u6237\u53cd\u9988\u548c\u793e\u533a\u8ba8\u8bba\u4e5f\u662f\u4e86\u89e3\u5176\u53ef\u9760\u6027\u7684\u91cd\u8981\u9014\u5f84\u3002<\/p>\n\u54ea\u4e9b\u7279\u5f81\u53ef\u4ee5\u5e2e\u52a9\u5224\u65adPython\u5c5e\u6027\u7684\u8d28\u91cf\uff1f<\/strong>
\u5224\u65adPython\u5c5e\u6027\u7684\u8d28\u91cf\u53ef\u4ee5\u4ece\u591a\u4e2a\u65b9\u9762\u5165\u624b\u3002\u9996\u5148\uff0c\u67e5\u770b\u8be5\u5c5e\u6027\u7684\u66f4\u65b0\u9891\u7387\u548c\u7ef4\u62a4\u72b6\u6001\uff0c\u6d3b\u8dc3\u7684\u9879\u76ee\u901a\u5e38\u610f\u5473\u7740\u66f4\u597d\u7684\u652f\u6301\u548cbug\u4fee\u590d\u3002\u5176\u6b21\uff0c\u5206\u6790\u5176\u4f9d\u8d56\u5173\u7cfb\uff0c\u8f83\u5c11\u4f9d\u8d56\u7684\u5c5e\u6027\u901a\u5e38\u66f4\u4e3a\u7a33\u5b9a\u3002\u6b64\u5916\uff0c\u67e5\u770b\u5c5e\u6027\u7684\u6d4b\u8bd5\u8986\u76d6\u7387\u548c\u5f00\u53d1\u8005\u7684\u4ee3\u7801\u98ce\u683c\u4e5f\u80fd\u591f\u53cd\u6620\u51fa\u5176\u4ee3\u7801\u8d28\u91cf\u3002<\/p>\n\u5982\u4f55\u5728\u9879\u76ee\u4e2d\u6709\u6548\u5730\u4f7f\u7528Python\u5c5e\u6027\uff1f<\/strong>
\u5728\u9879\u76ee\u4e2d\u4f7f\u7528Python\u5c5e\u6027\u65f6\uff0c\u5e94\u786e\u4fdd\u5176\u7b26\u5408\u9879\u76ee\u7684\u6574\u4f53\u67b6\u6784\u548c\u9700\u6c42\u3002\u9009\u62e9\u9002\u5408\u7684\u5c5e\u6027\u65f6\uff0c\u53ef\u4ee5\u5148\u5728\u5c0f\u8303\u56f4\u5185\u8fdb\u884c\u6d4b\u8bd5\uff0c\u8bc4\u4f30\u5176\u6027\u80fd\u548c\u517c\u5bb9\u6027\u3002\u786e\u4fdd\u9002\u5f53\u7684\u6587\u6863\u548c\u793a\u4f8b\u4ee3\u7801\u53ef\u4ee5\u5e2e\u52a9\u56e2\u961f\u6210\u5458\u5feb\u901f\u4e0a\u624b\u3002\u540c\u65f6\uff0c\u4fdd\u6301\u4ee3\u7801\u7684\u6a21\u5757\u5316\u548c\u53ef\u91cd\u7528\u6027\uff0c\u4e5f\u6709\u52a9\u4e8e\u63d0\u9ad8\u9879\u76ee\u7684\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u770b\u4e00\u4e2a\u503c\u5f97\u5c5e\u6027python\u65f6\uff0c\u6211\u4eec\u9700\u8981\u901a\u8fc7\u5c5e\u6027\u7684\u540d\u79f0\u3001\u5c5e\u6027\u7684\u7c7b\u578b\u3001\u5c5e\u6027\u7684\u503c\u3001\u5c5e\u6027\u7684\u4f5c\u7528\u3002\u5176\u4e2d\uff0c\u5c5e\u6027\u7684\u7c7b\u578b\u662f\u975e\u5e38 […]","protected":false},"author":3,"featured_media":1053625,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1053620"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1053620"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1053620\/revisions"}],"predecessor-version":[{"id":1053628,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1053620\/revisions\/1053628"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1053625"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1053620"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1053620"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1053620"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"\u5982\u4f55\u770b\u4e00\u4e2a\u503c\u5f97\u5c5e\u6027python\"](\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2024\/12\/aa7a923e-6118-4327-afd6-fa6dd3311eb8.webp?x-oss-process=image\/auto-orient,1\/format,webp\")
<\/p>\n