{"id":199,"date":"2016-08-05T16:40:48","date_gmt":"2016-08-05T16:40:48","guid":{"rendered":""},"modified":"2016-08-05T16:40:48","modified_gmt":"2016-08-05T16:40:48","slug":"","status":"publish","type":"post","link":"http:\/\/weizn.net\/?p=199","title":{"rendered":"Python\u4e0eC\u4e4b\u95f4\u901a\u8fc7Socket\u4f20\u8f93Struct"},"content":{"rendered":"<p>\n\t<span style=\"font-size:14px;\">\u6709\u51e0\u79cd\u65b9\u5f0f\u53ef\u4ee5\u8003\u8651\uff1a<\/span>\n<\/p>\n<p>\n\t<span style=\"font-size:14px;\">1.\u4f7f\u7528namedtuple\u548cstruct\u6a21\u5757<\/span>\n<\/p>\n<p>\n\t<span style=\"font-size:14px;\">\u5173\u4e8estruct\u6a21\u5757\u4e0d\u518d\u591a\u4ecb\u7ecd\uff0c\u53ef\u53c2\u8003\uff1a<\/span><a href=\"http:\/\/www.weizn.net\/?post=197\" target=\"_blank\"><span style=\"font-size:14px;\">http:\/\/www.weizn.net\/?post=197<\/span><\/a>\n<\/p>\n<p>\n\t<span style=\"font-size:14px;\">namedtuple\u4e3b\u8981\u7528\u6765\u4ea7\u751f\u53ef\u4ee5\u4f7f\u7528\u540d\u79f0\u6765\u8bbf\u95ee\u5143\u7d20\u7684\u6570\u636e\u5bf9\u8c61\uff0c\u901a\u5e38\u7528\u6765\u589e\u5f3a\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\uff0c\u5728\u8bbf\u95ee\u4e00\u4e9btuple\u7c7b\u578b\u7684\u6570\u636e\u65f6\u5c24\u5176\u597d\u7528\u3002\u56e0\u4e3astruct\u5728\u7528unpack\u89e3\u6790\u5b8c\u5b57\u8282\u6d41\u540e\u8fd4\u56de\u7684\u662ftuple\u7c7b\u578b\uff0c\u82e5\u4f7f\u7528namedtuple\u6765\u547d\u540dtuple\u53ef\u4ee5\u8ba9\u4ee3\u7801\u66f4\u5bb9\u6613\u8bfb\u61c2\u3002\u4e3e\u4e2a\u4f8b\u5b50\uff1a<\/span>\n<\/p>\n<pre class=\"prettyprint lang-py linenums\">from collections import namedtuple\r\n# \u53d8\u91cf\u540d\u548cnamedtuple\u4e2d\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u4e00\u822c\u4fdd\u6301\u4e00\u81f4\uff0c\u4f46\u4e5f\u53ef\u4ee5\u4e0d\u4e00\u6837\r\nStudent = namedtuple('Student', 'id name score')\r\n# \u6216\u8005 Student = namedtuple('Student', ['id', 'name', 'score'])\r\nstudents = [(1, 'Wu', 90), (2, 'Xing', 89), (3, 'Yuan', 98), (4, 'Wang', 95)]\r\nfor s in students:\r\n    stu = Student._make(s)\r\n    print stu\r\n \r\n# Output:\r\n# Student(id=1, name='Wu', score=90)\r\n# Student(id=2, name='Xing', score=89)\r\n# Student(id=3, name='Yuan', score=98)\r\n# Student(id=4, name='Wang', score=95)<\/pre>\n<pre class=\"prettyprint lang-py linenums\">\u6216\u8005\uff1a<\/pre>\n<pre class=\"prettyprint lang-py linenums\">\r\n\r\n<pre class=\"prettyprint lang-py linenums\">from collections import namedtuple\r\n\r\nFriend=namedtuple(\"Friend\",['name','age','email'])\r\n\r\nf1=Friend('xiaowang',33,'xiaowang@163.com')\r\nprint(f1)\r\nprint(f1.age)\r\nprint(f1.email)\r\nf2=Friend(name='xiaozhang',email='xiaozhang@sina.com',age=30)\r\nprint(f2)\r\n \r\nname,age,email=f2\r\nprint(name,age,email)<\/pre>\n<pre class=\"prettyprint lang-py linenums\"><\/pre>\n<p>\u4ecePython\u53d1\u9001struct\u7684\u65f6\u5019\u53ef\u4ee5\u8fd9\u6837\uff1a<\/p>\n<pre class=\"prettyprint lang-py linenums\">\r\n\r\n<pre class=\"prettyprint lang-py linenums\">from collections import namedtuple\r\nimport pickle # or cPickle, it's faster\r\nMyStruct = namedtuple(\"MyStruct\", \"sMark nPackLen nFlag nGisIp nPort sData sEnd\")\r\n\r\ntuple_to_send = MyStruct(sMark=\"abcdef\", nPackLen=...) #\u6784\u5efa\u5143\u7ec4\r\nstring_to_send = pickle.dumps(tuple_to_send) #\u5e8f\u5217\u5316<\/pre>\n<p><\/p>\n<pre class=\"prettyprint lang-py linenums\">2.\u4f7f\u7528Python ctypes\u6a21\u5757<\/pre>\n<pre class=\"prettyprint lang-py linenums\"><a href=\"http:\/\/www.weizn.net\/?post=215\" target=\"_blank\">http:\/\/www.weizn.net\/?post=215<\/a> <\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\n\t\u6709\u51e0\u79cd\u65b9\u5f0f\u53ef\u4ee5\u8003\u8651\uff1a\n<\/p>\n<p>\n\t1.\u4f7f\u7528namedtuple\u548cstruct\u6a21\u5757\n<\/p>\n<p>\n\t\u5173\u4e8estruct\u6a21\u5757\u4e0d\u518d\u591a\u4ecb\u7ecd\uff0c\u53ef\u53c2\u8003\uff1a<a href=\"http:\/\/www.weizn.net\/?post=197\" target=\"_blank\">http:\/\/www.weizn.net\/?post=197<\/a>\n<\/p>\n<p>\n\tnamedtuple\u4e3b\u8981\u7528\u6765\u4ea7\u751f\u53ef\u4ee5\u4f7f\u7528\u540d\u79f0\u6765\u8bbf\u95ee\u5143\u7d20\u7684\u6570\u636e\u5bf9\u8c61\uff0c\u901a\u5e38\u7528\u6765\u589e\u5f3a\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\uff0c\u5728\u8bbf\u95ee\u4e00\u4e9btuple\u7c7b\u578b\u7684\u6570\u636e\u65f6\u5c24\u5176\u597d\u7528\u3002\u56e0\u4e3astruct\u5728\u7528unpack\u89e3\u6790\u5b8c\u5b57\u8282\u6d41\u540e\u8fd4\u56de\u7684\u662ftuple\u7c7b\u578b\uff0c\u82e5\u4f7f\u7528na&#8230;<\/p>\n","protected":false},"author":1,"featured_media":556,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[334],"tags":[],"class_list":["post-199","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v16.9 - 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