{"id":206,"date":"2015-11-12T19:58:31","date_gmt":"2015-11-12T19:58:31","guid":{"rendered":""},"modified":"2015-11-12T19:58:31","modified_gmt":"2015-11-12T19:58:31","slug":"","status":"publish","type":"post","link":"http:\/\/weizn.net\/?p=206","title":{"rendered":"\u9762\u5411\u5bf9\u8c61\u8bed\u8a00\u4e2d\u7236\u7c7b\u65b9\u6cd5\u8c03\u7528\u5b50\u7c7b\u6210\u5458\u7684\u4e00\u70b9\u8bf4\u660e"},"content":{"rendered":"<p>\n\t<span style=\"font-size:14px;\">\u5728Python\u4e2d\uff0c\u6211\u4eec\u662f\u53ef\u4ee5\u5b9e\u73b0\u7236\u7c7b\u65b9\u6cd5\u8c03\u7528\u5b50\u7c7b\u6210\u5458\u7684\uff0c\u6d4b\u8bd5\u4ee3\u7801\u5982\u4e0b\uff1a<\/span>\n<\/p>\n<p>\n\t<span style=\"line-height:1.5;\"> <\/span>\n<\/p>\n<pre class=\"prettyprint lang-py linenums\">class A(object):\r\n\tdef __init__(self):\r\n\t\tself.var = 1\r\n\r\n\tdef printf(self):\r\n\t\ttry:\r\n\t\t\tprint self.var\r\n\t\t\tprint self.var2\r\n\t\texcept Exception, e:\r\n\t\t\tprint e\r\n\r\nclass B(A):\r\n\tdef __init__(self):\r\n\t\tsuper(B, self).__init__()\r\n\t\t\r\n\t\tself.var = 2\r\n\t\tself.var2 = 10\r\n\r\na = A()\r\nb = B()\r\n\r\na.printf()\r\nb.printf()\r\n\t\t<\/pre>\n<p><\/p>\n<p>\n\t\n<\/p>\n<p>\n\t<span style=\"line-height:1.5;\">\u8fd0\u884c\u7ed3\u679c\uff1a<\/span>\n<\/p>\n<p>\n\tC:\\Users\\Administrator\\Desktop&gt;python test.py<br \/>\n1<br \/>\n&#8216;A&#8217; object has no attribute &#8216;var2&#8217;<br \/>\n2<br \/>\n10<\/p>\n<p>&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;\n<\/p>\n<p>\n\t<span style=\"font-size:14px;\">\u53ef\u4ee5\u770b\u5230\u5728B\u4e2d\u8c03\u7528\u4eceA\u4e2d\u7ee7\u627f\u8fc7\u6765printf()\u65b9\u6cd5\u786e\u5b9e\u53ef\u4ee5\u8bbf\u95ee\u5230B\u7684\u53d8\u91cf\u3002\u62a5\u4e86\u4e24\u4e2a\u5f02\u5e38\uff0c\u7b2c\u4e00\u4e2a\u539f\u56e0\u662fA\u4e2d\u627e\u4e0d\u5230\u6210\u5458&#8217;var2&#8217;\uff0c\u8fd9\u4e2a\u662f\u6211\u4eec\u5728B\u4e2d\u7533\u660e\u7684\uff0cA\u5728\u521d\u59cb\u5316\u65f6\u5f53\u7136\u627e\u4e0d\u5230\u7684\u3002<\/span>\n<\/p>\n<p>\n\t\n<\/p>\n<p>\n\t<span style=\"font-size:14px;\">\u540c\u6837\u7684\u6d4b\u8bd5\u7528C++\u5b9e\u73b0\uff1a<\/span>\n<\/p>\n<p>\n\t<span style=\"font-size:14px;line-height:1.5;\"> <\/span>\n<\/p>\n<pre class=\"prettyprint lang-cpp linenums\">#include &lt;iostream&gt;\r\n\r\nusing namespace std;\r\n\r\nclass A\r\n{\r\npublic:\r\n    int var = 1;\r\n    int print()\r\n    {\r\n        cout &lt;&lt; var &lt;&lt;endl;\r\n    }\r\n};\r\n\r\nclass B : public A\r\n{\r\npublic:\r\n    int var = 2;\r\n};\r\n\r\nint main()\r\n{\r\n    B b = B();\r\n    b.print();\r\n\r\n    return 0;\r\n}\r\n<\/pre>\n<p><\/p>\n<p>\n\t\n<\/p>\n<p>\n\t<span style=\"font-size:14px;line-height:1.5;\">\u8fd0\u884c\u7ed3\u679c\uff1a<\/span>\n<\/p>\n<p>\n\t\n<\/p>\n<p>\n\t1<\/p>\n<p>Process returned 0 (0x0) &nbsp; execution time : 0.178 s<br \/>\n&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;\n<\/p>\n<p>\n\t<span style=\"font-size:14px;\">\u53ef\u4ee5\u770b\u5230\u5728C++\u4e2d\uff0c\u7236\u7c7b\u65b9\u6cd5\u662f\u627e\u4e0d\u5230\u5b50\u7c7b\u4e2d\u7684\u6210\u5458\u7684\u3002<\/span>\n<\/p>\n<p>\n\t<span style=\"font-size:14px;\">\u50cfC++\u8fd9\u7c7b\u7f16\u8bd1\u578b\u8bed\u8a00\uff0c\u7c7b\u4e2d\u7684\u8c03\u7528\u5730\u5740\u5728\u7a0b\u5e8f\u7f16\u8bd1\u65f6\u5c31\u5199\u597d\u4e86\uff0c\u56e0\u6b64\u8fd0\u884c\u540e\u65e0\u6cd5\u52a8\u6001\u67e5\u627e\u7c7b\u6210\u5458\uff0c\u52a8\u6001\u67e5\u627e\u7684\u76f8\u5173\u5185\u5bb9\u53c2\u8003\u591a\u6001\u3002\u4f46\u662fPython\u8c03\u7528\u51fd\u6570\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u76f8\u5f53\u4e8e\u662f\u7c7b\u7684\u5f15\u7528\uff0c\u901a\u8fc7\u8fd9\u4e2a\u5e94\u7528\u5c31\u53ef\u4ee5\u627e\u5230\u76f8\u5e94\u7684\u6210\u5458\u3002<\/span>\n<\/p>\n<p>\n\t<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\n\t\u5728Python\u4e2d\uff0c\u6211\u4eec\u662f\u53ef\u4ee5\u5b9e\u73b0\u7236\u7c7b\u65b9\u6cd5\u8c03\u7528\u5b50\u7c7b\u6210\u5458\u7684\uff0c\u6d4b\u8bd5\u4ee3\u7801\u5982\u4e0b\uff1a\n<\/p>\n<p>\n\t\n<\/p>\n<pre class=\"prettyprint lang-py linenums\">class A(object):\r\n\tdef __init__(self):\r\n\t\tself.var = 1\r\n\r\n\t\ttry:\r\n\t\t\tself.printf()\r\n\t\texcept Exception, e:\r\n\t\t\tprint e\r\n\r\n\tdef printf(self):\r\n\t\tprint self.var\r\n...<\/pre>\n<p>\n\t<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[324],"tags":[],"class_list":["post-206","post","type-post","status-publish","format-standard","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v16.9 - 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