{"id":727,"date":"2019-05-01T17:52:12","date_gmt":"2019-05-01T09:52:12","guid":{"rendered":"http:\/\/www.eait.co\/?p=727"},"modified":"2019-05-01T17:52:12","modified_gmt":"2019-05-01T09:52:12","slug":"new%e6%96%b9%e6%b3%95%e3%80%81%e5%ae%9a%e5%88%b6%e5%b1%9e%e6%80%a7%e8%ae%bf%e9%97%ae%e3%80%81%e6%8f%8f%e8%bf%b0%e7%ac%a6%e4%b8%8e%e8%a3%85%e9%a5%b0%e5%99%a8","status":"publish","type":"post","link":"https:\/\/notes.coremix.net\/?p=727","title":{"rendered":"new\u65b9\u6cd5\u3001\u5b9a\u5236\u5c5e\u6027\u8bbf\u95ee\u3001\u63cf\u8ff0\u7b26\u4e0e\u88c5\u9970\u5668"},"content":{"rendered":"
<\/div>\n
\u88c5\u9970\u5668\uff1a<\/div>\n
\u00a0 \u00a0 \u672c\u8d28\u662f\u51fd\u6570\uff0c\u80fd\u591f\u5b9e\u73b0\u5728\u4e0d\u4fee\u6539\u539f\u6765\u51fd\u6570\u7684\u57fa\u7840\u4e0a\u6dfb\u52a0\u529f\u80fd\u3002<\/div>\n
<\/div>\n
new\u65b9\u6cd5\u4e00\u5b9a\u8981\u6709\u8fd4\u56de\u503c\uff0cretrun object.___new__(cls)<\/div>\n
<\/div>\n
\u5355\u4f8b\u6a21\u5f0f\uff1a<\/div>\n
class A():<\/div>\n
\u00a0 \u00a0 def __new__(self,*args,**kwargs):<\/div>\n
\u00a0\u00a0 \u00a0\u00a0 \u00a0 if not hasattr(cls,’moran’)<\/div>\n
\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0 \u00a0 cls.moran = object.__new__(cls)<\/div>\n
\u00a0\u00a0 \u00a0\u00a0 \u00a0 retrun cls.moran<\/div>\n
<\/div>\n
<\/div>\n
\u7c7b\u88c5\u9970\u5668\uff1a<\/div>\n
class Myclass:<\/div>\n
\u00a0 \u00a0 def __init__(self,funcc):<\/div>\n
\u00a0\u00a0 \u00a0\u00a0 \u00a0 retrun object.__init__(cls)<\/div>\n
\u00a0 \u00a0 def __call__(self,*args,**kwargs):<\/div>\n
\u00a0\u00a0 \u00a0\u00a0 \u00a0 print(‘\u6211\u5728\u6267\u884c’)<\/div>\n
\u00a0 \u00a0 \u00a0\u00a0 \u00a0retrun self.funcc()<\/div>\n
@Myclass\u00a0 #@\u4ee5\u540e\u76f8\u5f53\u4e8e\u5b9e\u4f8b\u5316<\/div>\n
def f1():<\/div>\n
\u00a0 \u00a0 print(‘\u6211\u4e5f\u5728\u6267\u884c’)<\/div>\n
f1()<\/div>\n
\u7c7b\u53ef\u4ee5\u505a\u88c5\u9970\u5668\uff0c\u4f46\u662f\u4e00\u5b9a\u8981\u5b9a\u4e49call\u65b9\u6cd5<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
python\u81ea\u5e26\u7684\u4e09\u4e2a\u5185\u7f6e\u88c5\u9970\u5668\uff1a<\/div>\n
class Rectangle:<\/div>\n
\u00a0 \u00a0 def __init__(self,length,width):<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 self.length = length<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 self.width = width<\/div>\n
\u00a0 \u00a0 def area(self):<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 areas = self.length *self.width<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 return areas<\/div>\n
\u00a0 \u00a0 @property #\u5c31\u50cf\u8bbf\u95ee\u5c5e\u6027\u4e00\u6837<\/div>\n
\u00a0 \u00a0 def area(self):<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 return self.width *self.length<\/div>\n
\u00a0 \u00a0 @staticmethod #\u9759\u6001\u65b9\u6cd5\u00a0\u548cclass\u7c7b\u65ad\u5f00\u8054\u7cfb\uff0c\u76f8\u5f53\u4e8e\u5728\u7c7b\u91cc\u9762\u5199\u4e86\u4e00\u4e2a\u51fd\u6570\uff0c\u4e5f\u80fd\u591f\u5b9e\u73b0\u4e0d\u9700\u8981\u5b9e\u4f8b\u5316\uff0c\u76f4\u63a5\u7528\u7c7b\u540d\u8c03\u7528\u51fd\u6570\u3002\u4e0d\u80fd\u8bbf\u95ee\u7c7b\u91cc\u9762\u5176\u4ed6\u7684\u7c7b\u7684\u5c5e\u6027\u548c\u65b9\u6cd5<\/div>\n
\u00a0 \u00a0 def func(): #self\u5728\u8c03\u7528\u7684\u65f6\u5019\u56de\u62a5\u9519<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 print(‘staticmethod func’)<\/div>\n
\u00a0 \u00a0 @classmethod #\u7c7b\u65b9\u6cd5\u00a0\u53ef\u4ee5\u8c03\u7528\u7c7b\u91cc\u9762\u7684\u5c5e\u6027\u548c\u65b9\u6cd5<\/div>\n
\u00a0 \u00a0 def show(cls): #cls\u4ee3\u8868\u7c7b\u672c\u8eab<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 print(cls)<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 print(‘show fun’)<\/div>\n
<\/div>\n
<\/div>\n
\u7c7b\u88c5\u9970\u5668\uff1a<\/div>\n
class Test_Class:<\/div>\n
\u00a0 \u00a0 def __init__(self,func):<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 self.func = func<\/div>\n
\u00a0 \u00a0 def __call__(self):<\/div>\n
\u00a0\u00a0 \u00a0\u00a0 \u00a0 print(‘\u7c7b’)<\/div>\n
\u00a0\u00a0 \u00a0\u00a0 \u00a0 return self.func<\/div>\n
<\/div>\n
@Test_Class<\/div>\n
def fun_test():<\/div>\n
print(‘\u8fd9\u662f\u4e2a\u6d4b\u8bd5\u51fd\u6570’)<\/div>\n
\u7c7b\u4e5f\u53ef\u4ee5\u505a\u88c5\u9970\u5668\uff0c\u4f46\u662f\u9700\u8981\u5b9a\u4e49__call__\u65b9\u6cd5<\/div>\n
\u539f\u7406\u5728init\u91cc\u9762\u4f20\u5165\u51fd\u6570\uff0c\u5728call\u91cc\u628a\u51fd\u6570\u6267\u884c\u4e86<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
\u88c5\u9970\u5668\u8981\u70b9\uff1a<\/div>\n
1\u4fee\u9970\u51fd\u6570<\/div>\n
2\u7ed9\u51fd\u6570\u589e\u52a0\u529f\u80fd<\/div>\n
3\u4e09\u4e2a\u5185\u7f6e\u88c5\u9970\u5668\u662f\u9700\u8981\u638c\u63e1\u7684\uff0c\u5728\u9879\u76ee\u4e2d\u4f1a\u7ecf\u5e38\u7528\u5230<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
\u88c5\u9970\u5668\u57fa\u672c\u683c\u5f0f\uff1a<\/div>\n
def func(f1):<\/div>\n
\u00a0\u00a0 \u00a0def func1():<\/div>\n
\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0print(‘ssssss’)<\/div>\n
\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0f1()<\/div>\n
\u00a0\u00a0 \u00a0def func2():<\/div>\n
\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0print(‘ddddddd’)<\/div>\n
\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0f1()<\/div>\n
\u00a0\u00a0 \u00a0\u00a0\u00a0 return func2<\/div>\n
<\/div>\n
@func<\/div>\n
def f1():<\/div>\n
\u00a0\u00a0 \u00a0print(‘\u57fa\u7840\u51fd\u6570’)<\/div>\n
f1()<\/div>\n
<\/div>\n
<\/div>\n
\u7ed3\u679c\uff1a<\/div>\n
ddddddd<\/div>\n
\u57fa\u7840\u51fd\u6570<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
\u7c7b\u7684\u4e09\u4e2a\u5185\u7f6e\u88c5\u9970\u5668\uff1a<\/div>\n
#\u7c7b\u7684\u4e09\u4e2a\u5185\u7f6e\u88c5\u9970\u5668<\/div>\n
class Base():<\/div>\n
\u00a0\u00a0 \u00a0def __init__(self,name):<\/div>\n
\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0self.name = name<\/div>\n
\u00a0\u00a0 \u00a0age = 18<\/div>\n
\u00a0\u00a0 \u00a0@property#\u548c\u8bbf\u95ee\u5c5e\u6027\u4e00\u6837<\/div>\n
\u00a0\u00a0 \u00a0def eat(self):<\/div>\n
\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0print(‘\u6b63\u5728\u5403\u4e1c\u897f’)<\/div>\n
\u00a0\u00a0 \u00a0@staticmethod#\u8bbe\u7f6e\u9759\u6001\u7c7b\uff0c\u548c\u7c7b\u65ad\u5f00\u8fde\u63a5<\/div>\n
\u00a0\u00a0 \u00a0def run():<\/div>\n
\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0print(‘\u6b63\u5728\u8dd1\u6b65’)<\/div>\n
\u00a0\u00a0 \u00a0@classmethod#\u8bbe\u7f6e\u7c7b\u65b9\u6cd5\uff0ccls\u4ee3\u8868\u7c7b\u672c\u8eab<\/div>\n
\u00a0\u00a0 \u00a0def work(cls):<\/div>\n
\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0print(‘\u6b63\u5728\u5199\u4f5c\u4e1a’)<\/div>\n
\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0print(cls.age)<\/div>\n
\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0print(cls)<\/div>\n
a = Base(‘\u4f18\u79c0’)<\/div>\n
print(a.age)<\/div>\n
a.eat<\/div>\n
a.run()<\/div>\n
a.work()<\/div>\n
<\/div>\n
\u7ed3\u679c\uff1a<\/div>\n
18<\/div>\n
\u6b63\u5728\u5403\u4e1c\u897f<\/div>\n
\u6b63\u5728\u8dd1\u6b65<\/div>\n
\u6b63\u5728\u5199\u4f5c\u4e1a<\/div>\n
18<\/div>\n
<class ‘__main__.Base’><\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n","protected":false},"excerpt":{"rendered":"

\u88c5\u9970\u5668\uff1a \u00a0 \u00a0 \u672c\u8d28\u662f\u51fd\u6570\uff0c\u80fd\u591f\u5b9e\u73b0\u5728\u4e0d\u4fee\u6539\u539f\u6765\u51fd\u6570\u7684\u57fa\u7840\u4e0a\u6dfb\u52a0\u529f\u80fd\u3002 new\u65b9\u6cd5\u4e00\u5b9a\u8981\u6709\u8fd4\u56de\u503c\uff0cretru […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[20],"class_list":["post-727","post","type-post","status-publish","format-standard","hentry","category-python_note","tag-python"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/notes.coremix.net\/index.php?rest_route=\/wp\/v2\/posts\/727","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/notes.coremix.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/notes.coremix.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/notes.coremix.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/notes.coremix.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=727"}],"version-history":[{"count":1,"href":"https:\/\/notes.coremix.net\/index.php?rest_route=\/wp\/v2\/posts\/727\/revisions"}],"predecessor-version":[{"id":728,"href":"https:\/\/notes.coremix.net\/index.php?rest_route=\/wp\/v2\/posts\/727\/revisions\/728"}],"wp:attachment":[{"href":"https:\/\/notes.coremix.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=727"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/notes.coremix.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=727"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/notes.coremix.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=727"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}