{"id":1693,"date":"2021-08-02T15:13:13","date_gmt":"2021-08-02T07:13:13","guid":{"rendered":"https:\/\/egonlin.com\/?p=1693"},"modified":"2022-02-07T17:50:30","modified_gmt":"2022-02-07T09:50:30","slug":"%e9%9d%a2%e5%90%91%e5%af%b9%e8%b1%a1","status":"publish","type":"post","link":"https:\/\/egonlin.com\/?p=1693","title":{"rendered":"\u9762\u5411\u5bf9\u8c61"},"content":{"rendered":"<h1>\u9762\u5411\u5bf9\u8c61\u9762\u8bd5\u9898<\/h1>\n<h2>1. \u7b80\u8ff0\u9762\u5411\u5bf9\u8c61\u7684\u4e09\u5927\u7279\u6027\u3002<\/h2>\n<pre><code class=\"language-python\"># \u7b54\u6848\n\u5c01\u88c5:\n    \u5c01\u88c5\u6307\u7684\u662f\u628a\u4e00\u5806\u6570\u636e\u5c5e\u6027\u4e0e\u65b9\u6cd5\u6570\u636e\u653e\u5728\u4e00\u4e2a\u5bb9\u5668\u4e2d\uff0c\u8fd9\u4e2a\u5bb9\u5668\u5c31\u662f\u5bf9\u8c61\u3002\u8ba9\u5bf9\u8c61\u53ef\u4ee5\u901a\u8fc7 &quot;.&quot; \u6765\u8c03\u7528\u5bf9\u8c61\u4e2d\u7684\u6570\u636e\u5c5e\u6027\u4e0e\u65b9\u6cd5\u5c5e\u6027\u3002\n\n\u7ee7\u627f:\n    \u7ee7\u627f\u6307\u7684\u662f\u5b50\u7c7b\u53ef\u4ee5\u7ee7\u627f\u7236\u7c7b\u7684\u6570\u636e\u5c5e\u6027\u4e0e\u65b9\u6cd5\u5c5e\u6027\uff0c\u5e76\u53ef\u4ee5\u5bf9\u5176\u8fdb\u884c\u4fee\u6539\u6216\u4f7f\u7528\u3002\n\n\u591a\u6001:\n    \u5728python\u4e2d\u7684\u591a\u6001\u6307\u7684\u662f\u8ba9\u591a\u79cd\u7c7b\u82e5\u5177\u5907\u7c7b\u4f3c\u7684\u6570\u636e\u5c5e\u6027\u4e0e\u65b9\u6cd5\u5c5e\u6027\uff0c\u90fd\u7edf\u4e00\u597d\u547d\u540d\u89c4\u8303\uff0c\u8fd9\u6837\u53ef\u4ee5\u63d0\u9ad8\u5f00\u53d1\u8005\u7684\u4ee3\u7801\u7edf\u4e00\u6027\uff0c\u4f7f\u5f97\u8c03\u7528\u8005\u66f4\u65b9\u4fbf\u53bb\u7406\u89e3\u3002<\/code><\/pre>\n<h2>2. \u4ec0\u4e48\u662f\u9e2d\u5b50\u6a21\u578b?<\/h2>\n<pre><code class=\"language-python\"># \u7b54\u6848\n\u5728python\u4e2d\u4e0d\u4f1a\u5f3a\u5236\u6027\u8981\u6c42\u6240\u6709\u4eba\u7684\u4ee3\u7801\u90fd\u7edf\u4e00\u89c4\u8303\uff0c\u4e0d\u7edf\u4e00\u4e5f\u4e0d\u4f1a\u62a5\u9519\uff0c\u82e5\u4f7f\u7528\u62bd\u8c61\u7c7b\u5c31\u4f1a\u4f7fpython\u4ee3\u7801\u5f3a\u5236\u7edf\u4e00\u89c4\u8303\uff0c\u8fd9\u6837\u4e0d\u7b26\u5408python\u52a8\u6001\u8bed\u8a00\u7684\u7279\u6027\u3002\u6240\u4ee5\u8ba9\u5927\u5bb6\u90fd\u81ea\u89c9\u7edf\u4e00\u597d\u89c4\u8303\uff0c\u82e5\u5927\u5bb6\u7684\u5bf9\u8c61\u65b9\u6cd5\u90fd\u7c7b\u4f3c\u7684\u8bdd\u5c31\u4e00\u79cd\u89c4\u8303\uff0c\u53ea\u8981\u957f\u5f97\u50cf\u9e2d\u5b50\uff0c\u5c31\u79f0\u4e4b\u4e3a\u9e2d\u5b50\u7c7b\u578b\u3002<\/code><\/pre>\n<h2>3. super \u7684\u4f5c\u7528?<\/h2>\n<pre><code class=\"language-python\"># \u7b54\u6848\n&#039;&#039;&#039;\n        \u4f7f\u7528super()\u53ef\u4ee5\u5728\u5b50\u7c7b\u4e2d\u8c03\u7528\u7236\u7c7b\u7684\u65b9\u6cd5\u6216\u5c5e\u6027, \u53ef\u80fd\u4f60\u4f1a\u8bf4, \u5b50\u7c7b\u672c\u6765\u5c31\u53ef\u4ee5\u8c03\u7528\u7236\u7c7b\u4e2d\u6240\u6709\u975e\u79c1\u6709\u7684\u5c5e\u6027\u6216\u65b9\u6cd5,\u800c\u6211\u73b0\u5728\u8bf4\u7684\u662f, \u5f53\u5b50\u7c7b\u4e2d\u5b9e\u73b0\u4e86\u67d0\u4e2a\u65b9\u6cd5, \u7236\u7c7b\u4e2d\u4e5f\u6709\u8fd9\u4e2a\u65b9\u6cd5, \u5f53\u4f60\u8c03\u7528\u8fd9\u4e2a\u65b9\u6cd5\u65f6, \u65e2\u60f3\u6267\u884c\u5b50\u7c7b\u7684\u53c8\u60f3\u6267\u884c\u7236\u7c7b\u7684, \u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\u5c31\u53ef\u4ee5\u4f7f\u7528super()\n&#039;&#039;&#039;<\/code><\/pre>\n<h2>4. mro \u662f\u4ec0\u4e48?<\/h2>\n<pre><code class=\"language-python\"># \u7b54\u6848\n&#039;&#039;&#039;\n        mro\u5168\u79f0Method Resolution Order\uff0c\u6307\u7684\u662f\u65b9\u6cd5\u89e3\u6790\u987a\u5e8f\u3002\n        \u65b9\u6cd5\u8c03\u7528\u65f6\u5c31\u9700\u8981\u5bf9\u5f53\u524d\u7c7b\u548c\u57fa\u7c7b\u8fdb\u884c\u641c\u7d22\u4ee5\u786e\u5b9a\u65b9\u6cd5\u6240\u5728\u7684\u4f4d\u7f6e\u3002\u800c\u641c\u7d22\u7684\u987a\u5e8f\u5c31\u662f\u6240\u8c13\u7684\u300c\u65b9\u6cd5\u89e3\u6790\u987a\u5e8f\u300d\u3002\n&#039;&#039;&#039;<\/code><\/pre>\n<h2>5. \u4ec0\u4e48\u662f c3 \u7b97\u6cd5?<\/h2>\n<pre><code class=\"language-python\"># \u7b54\u6848\n&#039;&#039;&#039;\nC3\u7b97\u6cd5\u6700\u65e9\u88ab\u63d0\u51fa\u662f\u7528\u4e8eLisp\u7684\uff0c\u5e94\u7528\u5728Python\u4e2d\u662f\u4e3a\u4e86\u89e3\u51b3\u539f\u6765\u57fa\u4e8e\u6df1\u5ea6\u4f18\u5148\u641c\u7d22\u7b97\u6cd5\u4e0d\u6ee1\u8db3\u672c\u5730\u4f18\u5148\u7ea7\uff0c\u548c\u5355\u8c03\u6027\u7684\u95ee\u9898\u3002\n\u672c\u5730\u4f18\u5148\u7ea7\uff1a\u6307\u58f0\u660e\u65f6\u7236\u7c7b\u7684\u987a\u5e8f\uff0c\u6bd4\u5982C(A,B)\uff0c\u5982\u679c\u8bbf\u95eeC\u7c7b\u5bf9\u8c61\u5c5e\u6027\u65f6\uff0c\u5e94\u8be5\u6839\u636e\u58f0\u660e\u987a\u5e8f\uff0c\u4f18\u5148\u67e5\u627eA\u7c7b\uff0c\u7136\u540e\u518d\u67e5\u627eB\u7c7b\u3002\n\u5355\u8c03\u6027\uff1a\u5982\u679c\u5728C\u7684\u89e3\u6790\u987a\u5e8f\u4e2d\uff0cA\u6392\u5728B\u7684\u524d\u9762\uff0c\u90a3\u4e48\u5728C\u7684\u6240\u6709\u5b50\u7c7b\u91cc\uff0c\u4e5f\u5fc5\u987b\u6ee1\u8db3\u8fd9\u4e2a\u987a\u5e8f\u3002\n&#039;&#039;&#039;<\/code><\/pre>\n<h2>6. \u5217\u4e3e\u9762\u5411\u5bf9\u8c61\u4e2d\u5e26\u53cc\u4e0b\u5212\u7ebf\u7684\u7279\u6b8a\u65b9\u6cd5\u3002<\/h2>\n<pre><code class=\"language-python\"># \u7b54\u6848\n#__setattr__: \u6dfb\u52a0\/\u4fee\u6539\u5c5e\u6027\u4f1a\u89e6\u53d1\u5b83\u7684\u6267\u884c\n#__delattr__: \u5220\u9664\u5c5e\u6027\u7684\u65f6\u5019\u4f1a\u89e6\u53d1\n#__getattr__: \u53ea\u6709\u5728\u4f7f\u7528\u70b9\u8c03\u7528\u5c5e\u6027\u4e14\u5c5e\u6027\u4e0d\u5b58\u5728\u7684\u65f6\u5019\u624d\u4f1a\u89e6\u53d1\n# __getattribute__: \u4e0d\u7ba1\u662f\u5426\u5b58\u5728,\u6211\u90fd\u4f1a\u6267\u884c<\/code><\/pre>\n<h2>7. \u53cc\u4e0b\u5212\u7ebf\u548c\u5355\u4e0b\u5212\u7ebf\u7684\u533a\u522b?<\/h2>\n<pre><code class=\"language-python\"># \u7b54\u6848\n&#039;&#039;&#039;\n&quot;\u5355\u4e0b\u5212\u7ebf&quot; \u5f00\u59cb\u7684\u6210\u5458\u53d8\u91cf\u53eb\u505a\u4fdd\u62a4\u53d8\u91cf\uff0c\u610f\u601d\u662f\u53ea\u6709\u7c7b\u5bf9\u8c61\u548c\u5b50\u7c7b\u5bf9\u8c61\u81ea\u5df1\u80fd\u8bbf\u95ee\u5230\u8fd9\u4e9b\u53d8\u91cf\u3002\n\n&quot;\u53cc\u4e0b\u5212\u7ebf&quot; \u5f00\u59cb\u7684\u662f\u79c1\u6709\u6210\u5458\uff0c\u610f\u601d\u662f\u53ea\u6709\u7c7b\u5bf9\u8c61\u81ea\u5df1\u80fd\u8bbf\u95ee\uff0c\u8fde\u5b50\u7c7b\u5bf9\u8c61\u4e5f\u4e0d\u80fd\u8bbf\u95ee\u5230\u8fd9\u4e2a\u6570\u636e\u3002\n&#039;&#039;&#039;<\/code><\/pre>\n<h2>8. \u5b9e\u4f8b\u53d8\u91cf\u548c\u7c7b\u53d8\u91cf\u7684\u533a\u522b?<\/h2>\n<pre><code class=\"language-python\"># \u7b54\u6848\n&#039;&#039;&#039;\n\u7c7b\u53d8\u91cf\u662f\u6240\u6709\u5bf9\u8c61\u5171\u6709\uff0c\u5176\u4e2d\u4e00\u4e2a\u5bf9\u8c61\u5c06\u5b83\u503c\u6539\u53d8\uff0c\u5176\u4ed6\u5bf9\u8c61\u5f97\u5230\u7684\u5c31\u662f\u6539\u53d8\u540e\u7684\u7ed3\u679c\uff1b\u800c\u5b9e\u4f8b\u53d8\u91cf\u5219\u5c5e\u5bf9\u8c61\u79c1\u6709\uff0c\u67d0\u4e00\u4e2a\u5bf9\u8c61\u5c06\u5176\u503c\u6539\u53d8\uff0c\u4e0d\u5f71\u54cd\u5176\u4ed6\u5bf9\u8c61\uff1b\n&#039;&#039;&#039;<\/code><\/pre>\n<h2>9. \u9759\u6001\u65b9\u6cd5\u548c\u7c7b\u65b9\u6cd5\u533a\u522b?<\/h2>\n<pre><code class=\"language-python\"># \u7b54\u6848\n&#039;&#039;&#039;\nPython\u7684\u7c7b\u5c31\u662f\u4e2a\u8bed\u6cd5\u7cd6\u3002\u4e00\u4e2a\u51fd\u6570\u5199\u5728\u7c7b\u91cc\u9762\u548c\u5199\u5728\u7c7b\u5916\u9762\u6ca1\u6709\u533a\u522b\uff0c\u552f\u4e00\u7684\u533a\u522b\u5c31\u662f\u53c2\u6570\uff0c\u6240\u8c13\u5b9e\u4f8b\u65b9\u6cd5\u5c31\u662f\u7b2c\u4e00\u4e2a\u53c2\u6570\u662fself\uff0c\u6240\u8c13\u7c7b\u65b9\u6cd5\u5c31\u662f\u7b2c\u4e00\u4e2a\u53c2\u6570\u662fclass\uff0c\u800c\u9759\u6001\u65b9\u6cd5\u4e0d\u9700\u8981\u989d\u5916\u7684\u53c2\u6570\uff0c\u6240\u4ee5\u5fc5\u987b\u533a\u5206\u3002\n&#039;&#039;&#039;<\/code><\/pre>\n<h2>10. isinstance \u548c type \u7684\u4f5c\u7528?<\/h2>\n<pre><code class=\"language-python\"># \u7b54\u6848\n&#039;&#039;&#039;\ntype\u548cisinstance\u90fd\u53ef\u4ee5\u5224\u65ad\u53d8\u91cf\u662f\u5426\u5c5e\u4e8e\u67d0\u4e2a\u5185\u5efa\u7c7b\u578b\ntype\u53ea\u63a5\u6536\u4e00\u4e2a\u53c2\u6570\uff0c\u4e0d\u4f46\u53ef\u4ee5\u5224\u65ad\u53d8\u91cf\u662f\u5426\u5c5e\u4e8e\u67d0\u4e2a\u7c7b\u578b\uff0c\u800c\u4e14\u53ef\u4ee5\u5f97\u5230\u53c2\u6570\u53d8\u91cf\u672a\u77e5\u7684\u6240\u5c5e\u7684\u7c7b\u578b\uff1b\u800cisinstance\u53ea\u80fd\u5224\u65ad\u662f\u5426\u5c5e\u4e8e\u67d0\u4e2a\u5df2\u77e5\u7c7b\u578b\uff0c\u4e0d\u80fd\u76f4\u63a5\u5f97\u5230\u53d8\u91cf\u672a\u77e5\u7684\u6240\u5c5e\u7684\u7c7b\u578b\n&#039;&#039;&#039;<\/code><\/pre>\n<h2>11. \u6709\u7528\u8fc7with statement(\u8bed\u53e5)\u5417?\u5b83\u7684\u597d\u5904\u662f\u4ec0\u4e48?<\/h2>\n<pre><code class=\"language-python\"># \u7b54\u6848\n&#039;&#039;&#039;\nwith\u8bed\u53e5\u4f1a\u5728\u5d4c\u5957\u7684\u4ee3\u7801\u6267\u884c\u4e4b\u540e\uff0c\u81ea\u52a8\u5173\u95ed\u6587\u4ef6\u3002\u8fd9\u79cd\u505a\u6cd5\u7684\u8fd8\u6709\u53e6\u4e00\u4e2a\u4f18\u52bf\u5c31\u662f\uff0c\u65e0\u8bba\u5d4c\u5957\u7684\u4ee3\u7801\u662f\u4ee5\u4f55\u79cd\u65b9\u5f0f\u7ed3\u675f\u7684\uff0c\u5b83\u90fd\u5173\u95ed\u6587\u4ef6\u3002\u5982\u679c\u5728\u5d4c\u5957\u7684\u4ee3\u7801\u4e2d\u53d1\u751f\u5f02\u5e38\uff0c\u5b83\u80fd\u591f\u5728\u5916\u90e8exception handler catch\u5f02\u5e38\u524d\u5173\u95ed\u6587\u4ef6\u3002\u5982\u679c\u5d4c\u5957\u4ee3\u7801\u6709return\/continue\/break\u8bed\u53e5\uff0c\u5b83\u540c\u6837\u80fd\u591f\u5173\u95ed\u6587\u4ef6\u3002\n&#039;&#039;&#039;<\/code><\/pre>\n<h2>12. \u4e0b\u5217\u6570\u636e\u7ed3\u6784\u4e2d,\u54ea\u4e00\u79cd\u662f\u4e0d\u53ef\u8fed\u4ee3\u7684<\/h2>\n<pre><code class=\"language-python\">&#039;&#039;&#039;\n    A.  dict\n    B.  object\n    C.  set\n    D.  str\n&#039;&#039;&#039;\n\n# \u7b54\u6848:\nB<\/code><\/pre>\n<h2>13. \u5b9e\u73b0\u4e00\u4e2aSingleton\u5355\u4f8b\u7c7b,\u8981\u6c42\u9075\u5faa\u57fa\u672c\u8bed\u8a00\u7f16\u7a0b\u89c4\u8303(\u7528\u5c3d\u91cf\u591a\u7684\u65b9 \u5f0f)\u3002<\/h2>\n<p><\/p><div id=\"rml_readmorelogin_placeholder\" style=\"position:relative;\"><div id=\"rml_fade_content\" style=\"position: absolute;\r\ntop:-10em;\r\nwidth:100%;\r\nheight:10em;\r\nbackground: -webkit-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: -moz-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: -o-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: -ms-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\"><\/div><div class=\"wpf-controller aru_rml_from_in_post\" style=\"background-color:#eeeeee;border:5px solid #cce6ff;\" id=\"ARU_ReadMoreLogin_ReadMoreLoginController\"><h2 id=\"Header\">\u67e5\u770b\u66f4\u591a<\/h2><div id=\"Message\"><p>\u8054\u7cfb\u7ba1\u7406\u5458\u5fae\u4fe1tutu19192010\uff0c\u6ce8\u518c\u8d26\u53f7<\/p>\n<\/div><div id=\"StatusBarHeader\"><\/div><form id=\"ARU_ReadMoreLogin_ReadMoreLoginController\"><input name=\"post_id\" value=\"1693\" type=\"hidden\"\/><input name=\"_init_callback\" value=\"InitLogin\" type=\"hidden\"\/><input name=\"post_id\" value=\"1693\" type=\"hidden\"\/><input name=\"rt_ype\" value=\"1\" type=\"hidden\"\/><input name=\"nonce\" value=\"703e5333d8\" type=\"hidden\"\/><input name=\"_wpnonce\" value=\"fe0b6c877b\" type=\"hidden\"\/><input name=\"_controller\" value=\"ARU_ReadMoreLogin\\ReadMoreLoginController\" type=\"hidden\"\/><input name=\"_proxy_controller\" value=\"ARU_ReadMoreLogin\\ReadMoreLoginController\" type=\"hidden\"\/><input name=\"_view\" value=\"ARU_ReadMoreLogin\\ReadMoreLoginView\" type=\"hidden\"\/><table class=\"wpf-table-placeholder\"><tbody class=\"wpf-table-placeholder\"><tr class=\"wpf-table-placeholder\"><td class=\"wpf-table-placeholder-input\" width=\"400px\"><table class=\"wpf-table-placeholder\"><tbody class=\"wpf-table-placeholder\"><tr class=\"wpf-table-placeholder\"><th class=\"wpf-table-placeholder-input\"><label class=\"wpf-label\">Username:<\/label><\/th><\/tr><tr class=\"wpf-table-placeholder\"><td class=\"wpf-table-placeholder-input\"><input class=\"regular-text text_input\" name=\"username\" value=\"\" type=\"text\"\/><\/td><\/tr><tr class=\"wpf-table-placeholder\"><th class=\"wpf-table-placeholder-input\"><label class=\"wpf-label\">Password:<\/label><\/th><\/tr><tr class=\"wpf-table-placeholder\"><td class=\"wpf-table-placeholder-input\"><input class=\"regular-text text_input\" name=\"password\" value=\"\" type=\"password\"\/><\/td><\/tr><\/tbody><\/table><p class=\"wpf-table-placeholder submit\"><button class=\"wp_plugin_framework_ajax_button\" type=\"button\" style=\"background-color:#4D90FE;;color:#ffffff;;border:1px solid #3079ed;\" name=\"_event\" value=\"ButtonLogin\">Log in<\/button><\/p><\/td><td class=\"wpf-table-placeholder-input\"><\/td><\/tr><\/tbody><\/table><\/form><div id=\"ButtonStartRegister\"><a href=\"https:\/\/egonlin.com\/wp-login.php?action=register\">Register<\/a><\/div><div id=\"Link1\"><a href=\"https:\/\/egonlin.com\/wp-login.php?action=lostpassword\">Forgotten username or password?<\/a><\/div><div id=\"StatusBarFooter\"><\/div><\/div><\/div><div id=aru_remaining_content><\/div>","protected":false},"excerpt":{"rendered":"<p>\u9762\u5411\u5bf9\u8c61\u9762\u8bd5\u9898 1. \u7b80\u8ff0\u9762\u5411\u5bf9\u8c61\u7684\u4e09\u5927\u7279\u6027\u3002 # \u7b54\u6848 \u5c01\u88c5: \u5c01\u88c5\u6307\u7684\u662f\u628a\u4e00\u5806\u6570\u636e\u5c5e\u6027\u4e0e\u65b9\u6cd5\u6570\u636e\u653e\u5728\u4e00\u4e2a\u5bb9 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":2529,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[200],"tags":[216,217,215],"_links":{"self":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/1693"}],"collection":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1693"}],"version-history":[{"count":0,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/1693\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/media\/2529"}],"wp:attachment":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1693"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1693"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1693"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}