{"id":396,"date":"2025-01-12T15:55:07","date_gmt":"2025-01-12T07:55:07","guid":{"rendered":"http:\/\/sqtcw.cn\/?p=396"},"modified":"2025-01-12T15:55:07","modified_gmt":"2025-01-12T07:55:07","slug":"class-%e7%b1%bb%e5%b1%9e%e6%80%a7__init__-%e6%9e%84%e9%80%a0%e6%96%b9%e6%b3%95def%e5%ae%9e%e4%be%8b%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"http:\/\/www.cnitw.com\/?p=396","title":{"rendered":"class \u5b9a\u4e49\u7c7b__init__ \u6784\u9020\u5b9e\u4f8b\u5c5e\u6027\u53ca\u5b9e\u4f8b\u65b9\u6cd5"},"content":{"rendered":"\n<p>\u5728 Python \u4e2d\uff0c<code>class<\/code> \u5173\u952e\u5b57\u7528\u4e8e\u5b9a\u4e49\u4e00\u4e2a\u7c7b\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u5173\u4e8e\u7c7b\u7684\u8be6\u7ec6\u89e3\u91ca\u548c\u793a\u4f8b\uff1a<\/p>\n\n\n\n<p><strong>\u8bed\u6cd5\u548c\u7ed3\u6784<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>class ClassName:\n    # \u7c7b\u5c5e\u6027\n    class_attribute = value\n\n    # \u6784\u9020\u65b9\u6cd5\n    def __init__(self, parameter1, parameter2,...):\n        # \u5b9e\u4f8b\u5c5e\u6027\u521d\u59cb\u5316\n        self.instance_attribute1 = parameter1\n        self.instance_attribute2 = parameter2\n       ...\n\n    # \u5b9e\u4f8b\u65b9\u6cd5\n    def method_name(self, parameter1,...):\n        # \u65b9\u6cd5\u7684\u5177\u4f53\u5b9e\u73b0\n       ...<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7c7b\u53ef\u4ee5\u5305\u542b\u7c7b\u5c5e\u6027\uff08\u5728\u7c7b\u7ea7\u522b\u5171\u4eab\u7684\u5c5e\u6027\uff09\u548c\u5b9e\u4f8b\u5c5e\u6027\uff08\u6bcf\u4e2a\u5b9e\u4f8b\u72ec\u7acb\u62e5\u6709\u7684\u5c5e\u6027\uff09\u3002<\/li>\n\n\n\n<li><code>__init__<\/code> \u65b9\u6cd5\u662f\u6784\u9020\u65b9\u6cd5\uff0c\u7528\u4e8e\u5728\u521b\u5efa\u5b9e\u4f8b\u65f6\u521d\u59cb\u5316\u5b9e\u4f8b\u5c5e\u6027\u3002<\/li>\n\n\n\n<li>\u7c7b\u4e2d\u7684\u65b9\u6cd5\u901a\u5e38\u4ee5 <code>self<\/code> \u4f5c\u4e3a\u7b2c\u4e00\u4e2a\u53c2\u6570\uff0c\u4ee3\u8868\u8c03\u7528\u8be5\u65b9\u6cd5\u7684\u5b9e\u4f8b\u672c\u8eab\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u793a\u4f8b\u4ee3\u7801<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>class Dog:\n    species = \"Canis lupus familiaris\"  # \u7c7b\u5c5e\u6027\uff0c\u6240\u6709\u72d7\u7684\u7269\u79cd\u90fd\u662f\u4e00\u6837\u7684\n\n    def __init__(self, name, age):\n        self.name = name  # \u5b9e\u4f8b\u5c5e\u6027\uff0c\u6bcf\u4e2a\u72d7\u6709\u4e0d\u540c\u7684\u540d\u5b57\n        self.age = age  # \u5b9e\u4f8b\u5c5e\u6027\uff0c\u6bcf\u4e2a\u72d7\u6709\u4e0d\u540c\u7684\u5e74\u9f84\n\n    def bark(self):\n        print(f\"{self.name} says Woof!\")\n\ndog1 = Dog(\"Buddy\", 3)\ndog2 = Dog(\"Max\", 5)\n\nprint(dog1.name)\nprint(dog1.age)\nprint(dog1.species)\ndog1.bark()\n\nprint(dog2.name)\nprint(dog2.age)\nprint(dog2.species)\ndog2.bark()<\/code><\/pre>\n\n\n\n<p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c<code>Dog<\/code> \u7c7b\u6709\u4e00\u4e2a\u7c7b\u5c5e\u6027 <code>species<\/code> \u548c\u4e24\u4e2a\u5b9e\u4f8b\u5c5e\u6027 <code>name<\/code> \u548c <code>age<\/code>\u3002\u8fd8\u6709\u4e00\u4e2a\u5b9e\u4f8b\u65b9\u6cd5 <code>bark<\/code>\uff0c\u7528\u4e8e\u8ba9\u72d7\u201c\u53eb\u201d\u3002\u901a\u8fc7\u521b\u5efa\u4e0d\u540c\u7684 <code>Dog<\/code> \u5b9e\u4f8b\uff0c\u53ef\u4ee5\u770b\u5230\u6bcf\u4e2a\u5b9e\u4f8b\u90fd\u6709\u81ea\u5df1\u72ec\u7acb\u7684 <code>name<\/code> \u548c <code>age<\/code> \u5c5e\u6027\uff0c\u540c\u65f6\u5171\u4eab\u7c7b\u5c5e\u6027 <code>species<\/code>\u3002<\/p>\n\n\n\n<p>\u7c7b\u7684\u4f7f\u7528\u4f7f\u5f97\u4ee3\u7801\u66f4\u52a0\u6a21\u5757\u5316\u3001\u53ef\u7ef4\u62a4\u548c\u53ef\u6269\u5c55\uff0c\u901a\u8fc7\u5c01\u88c5\u6570\u636e\u548c\u884c\u4e3a\uff0c\u63d0\u4f9b\u4e86\u4e00\u79cd\u6e05\u6670\u7684\u7ec4\u7ec7\u4ee3\u7801\u7684\u65b9\u5f0f\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u5bf9\u8fd9\u6bb5\u4ee3\u7801\u7684\u89e3\u6790\uff1a<\/p>\n\n\n\n<p><strong>\u4e00\u3001\u5b9a\u4e49\u7c7b<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>class Dog:\n    species = \"Canis lupus familiaris\"  # \u7c7b\u5c5e\u6027\uff0c\u6240\u6709\u72d7\u7684\u7269\u79cd\u90fd\u662f\u4e00\u6837\u7684\n\n    def __init__(self, name, age):\n        self.name = name  # \u5b9e\u4f8b\u5c5e\u6027\uff0c\u6bcf\u4e2a\u72d7\u6709\u4e0d\u540c\u7684\u540d\u5b57\n        self.age = age  # \u5b9e\u4f8b\u5c5e\u6027\uff0c\u6bcf\u4e2a\u72d7\u6709\u4e0d\u540c\u7684\u5e74\u9f84\n\n    def bark(self):\n        print(f\"{self.name} says Woof!\")<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u9996\u5148\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3a <code>Dog<\/code> \u7684\u7c7b\u3002<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>species<\/code> \u662f\u4e00\u4e2a\u7c7b\u5c5e\u6027\uff0c\u5b83\u5bf9\u4e8e\u6240\u6709\u7684 <code>Dog<\/code> \u7c7b\u7684\u5b9e\u4f8b\u90fd\u662f\u76f8\u540c\u7684\uff0c\u8868\u793a\u72d7\u7684\u7269\u79cd\u3002<\/li>\n\n\n\n<li><code>__init__<\/code> \u662f\u6784\u9020\u65b9\u6cd5\uff0c\u5728\u521b\u5efa <code>Dog<\/code> \u7c7b\u7684\u5b9e\u4f8b\u65f6\u88ab\u81ea\u52a8\u8c03\u7528\u3002\u5b83\u63a5\u6536 <code>name<\/code> \u548c <code>age<\/code> \u4e24\u4e2a\u53c2\u6570\uff0c\u5e76\u5c06\u5b83\u4eec\u5206\u522b\u8d4b\u503c\u7ed9\u5b9e\u4f8b\u5c5e\u6027 <code>self.name<\/code> \u548c <code>self.age<\/code>\uff0c\u8fd9\u6837\u6bcf\u4e2a\u72d7\u5b9e\u4f8b\u90fd\u53ef\u4ee5\u6709\u4e0d\u540c\u7684\u540d\u5b57\u548c\u5e74\u9f84\u3002<\/li>\n\n\n\n<li><code>bark<\/code> \u662f\u4e00\u4e2a\u5b9e\u4f8b\u65b9\u6cd5\uff0c\u5f53\u8c03\u7528\u8fd9\u4e2a\u65b9\u6cd5\u65f6\uff0c\u4f1a\u6253\u5370\u51fa\u72d7\u7684\u540d\u5b57\u548c\u53eb\u58f0\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u4e8c\u3001\u521b\u5efa\u5b9e\u4f8b<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>dog1 = Dog(\"Buddy\", 3)\ndog2 = Dog(\"Max\", 5)<\/code><\/pre>\n\n\n\n<p>\u8fd9\u91cc\u521b\u5efa\u4e86\u4e24\u4e2a <code>Dog<\/code> \u7c7b\u7684\u5b9e\u4f8b <code>dog1<\/code> \u548c <code>dog2<\/code>\uff0c\u5206\u522b\u4f20\u5165\u4e0d\u540c\u7684\u540d\u5b57\u548c\u5e74\u9f84\u4f5c\u4e3a\u53c2\u6570\u3002<\/p>\n\n\n\n<p><strong>\u4e09\u3001\u8bbf\u95ee\u5c5e\u6027\u548c\u65b9\u6cd5<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>print(dog1.name)\nprint(dog1.age)\nprint(dog1.species)\ndog1.bark()<\/code><\/pre>\n\n\n\n<p>\u8fd9\u90e8\u5206\u4ee3\u7801\u5c55\u793a\u4e86\u5982\u4f55\u8bbf\u95ee\u5b9e\u4f8b\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>dog1.name<\/code> \u548c <code>dog1.age<\/code> \u5206\u522b\u8bbf\u95ee <code>dog1<\/code> \u5b9e\u4f8b\u7684\u540d\u5b57\u548c\u5e74\u9f84\u5c5e\u6027\u3002<\/li>\n\n\n\n<li><code>dog1.species<\/code> \u8bbf\u95ee\u7c7b\u5c5e\u6027\uff0c\u7531\u4e8e\u7c7b\u5c5e\u6027\u5bf9\u4e8e\u6240\u6709\u5b9e\u4f8b\u90fd\u662f\u76f8\u540c\u7684\uff0c\u6240\u4ee5\u53ef\u4ee5\u901a\u8fc7\u4efb\u4f55\u4e00\u4e2a\u5b9e\u4f8b\u6765\u8bbf\u95ee\u3002<\/li>\n\n\n\n<li><code>dog1.bark()<\/code> \u8c03\u7528 <code>dog1<\/code> \u5b9e\u4f8b\u7684 <code>bark<\/code> \u65b9\u6cd5\uff0c\u6253\u5370\u51fa\u72d7\u7684\u540d\u5b57\u548c\u53eb\u58f0\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u7c7b\u4f3c\u5730\uff0c\u5bf9 <code>dog2<\/code> \u4e5f\u8fdb\u884c\u4e86\u76f8\u540c\u7684\u64cd\u4f5c\u3002<\/p>\n\n\n\n<p>\u603b\u7684\u6765\u8bf4\uff0c\u8fd9\u6bb5\u4ee3\u7801\u901a\u8fc7\u5b9a\u4e49\u4e00\u4e2a <code>Dog<\/code> \u7c7b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u521b\u5efa\u7c7b\u3001\u5b9a\u4e49\u7c7b\u5c5e\u6027\u548c\u5b9e\u4f8b\u5c5e\u6027\u3001\u6784\u9020\u65b9\u6cd5\u4ee5\u53ca\u5b9e\u4f8b\u65b9\u6cd5\uff0c\u5e76\u5982\u4f55\u521b\u5efa\u7c7b\u7684\u5b9e\u4f8b\u5e76\u8bbf\u95ee\u5b83\u4eec\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 Python \u4e2d\uff0cclass \u5173\u952e\u5b57\u7528\u4e8e\u5b9a\u4e49\u4e00\u4e2a\u7c7b\u3002 \u4ee5\u4e0b\u662f\u4e00\u4e2a\u5173\u4e8e\u7c7b\u7684\u8be6\u7ec6\u89e3\u91ca\u548c\u793a\u4f8b\uff1a \u8bed\u6cd5\u548c\u7ed3\u6784\uff1a \u793a\u4f8b\u4ee3\u7801\uff1a \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cDog \u7c7b\u6709\u4e00\u4e2a\u7c7b\u5c5e\u6027 species \u548c\u4e24\u4e2a\u5b9e\u4f8b\u5c5e\u6027 name \u548c age\u3002\u8fd8\u6709\u4e00\u4e2a\u5b9e\u4f8b\u65b9\u6cd5 bark\uff0c\u7528\u4e8e\u8ba9\u72d7\u201c\u53eb\u201d\u3002\u901a\u8fc7\u521b\u5efa\u4e0d\u540c\u7684 Dog \u5b9e\u4f8b\uff0c\u53ef\u4ee5\u770b\u5230\u6bcf\u4e2a\u5b9e\u4f8b\u90fd\u6709\u81ea\u5df1\u72ec\u7acb\u7684 name \u548c age \u5c5e\u6027\uff0c\u540c\u65f6\u5171\u4eab\u7c7b\u5c5e\u6027 species\u3002 \u7c7b\u7684\u4f7f\u7528\u4f7f\u5f97\u4ee3\u7801\u66f4\u52a0\u6a21\u5757\u5316\u3001\u53ef\u7ef4\u62a4\u548c\u53ef\u6269\u5c55\uff0c\u901a\u8fc7\u5c01\u88c5\u6570\u636e\u548c\u884c\u4e3a\uff0c\u63d0\u4f9b\u4e86\u4e00\u79cd\u6e05\u6670\u7684\u7ec4\u7ec7\u4ee3\u7801\u7684\u65b9\u5f0f\u3002 \u4ee5\u4e0b\u662f\u5bf9\u8fd9\u6bb5\u4ee3\u7801\u7684\u89e3\u6790\uff1a \u4e00\u3001\u5b9a\u4e49\u7c7b \u4e8c\u3001\u521b\u5efa\u5b9e\u4f8b \u8fd9\u91cc\u521b\u5efa\u4e86\u4e24\u4e2a Dog \u7c7b\u7684\u5b9e\u4f8b dog1&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-396","post","type-post","status-publish","format-standard","hentry","category-python"],"_links":{"self":[{"href":"http:\/\/www.cnitw.com\/index.php?rest_route=\/wp\/v2\/posts\/396","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.cnitw.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.cnitw.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.cnitw.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.cnitw.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=396"}],"version-history":[{"count":0,"href":"http:\/\/www.cnitw.com\/index.php?rest_route=\/wp\/v2\/posts\/396\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.cnitw.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=396"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.cnitw.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=396"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.cnitw.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=396"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}