{"id":2242,"date":"2021-08-03T21:03:13","date_gmt":"2021-08-03T13:03:13","guid":{"rendered":"https:\/\/egonlin.com\/?p=2242"},"modified":"2022-02-07T11:14:44","modified_gmt":"2022-02-07T03:14:44","slug":"%e7%ac%ac%e4%ba%8c%e8%8a%82%ef%bc%9a%e5%88%86%e6%9e%90%e7%ba%bf%e7%a8%8b%e5%92%8c%e5%8d%8f%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/egonlin.com\/?p=2242","title":{"rendered":"\u7b2c\u4e8c\u8282\uff1a\u5206\u6790\u7ebf\u7a0b\u548c\u534f\u7a0b"},"content":{"rendered":"<h1>flask\u4e4b\u5206\u6790\u7ebf\u7a0b\u548c\u534f\u7a0b<\/h1>\n<h1>01 \u601d\u8003\uff1a\u6bcf\u4e2a\u8bf7\u6c42\u4e4b\u95f4\u7684\u5173\u7cfb<\/h1>\n<p>\u6211\u4eec\u6bcf\u4e00\u4e2a\u8bf7\u6c42\u8fdb\u6765\u7684\u65f6\u5019\u90fd\u5f00\u4e00\u4e2a\u8fdb\u7a0b\u80af\u5b9a\u4e0d\u5408\u7406\uff0c\u90a3\u4e48\u5982\u679c\u6bcf\u4e00\u4e2a\u8bf7\u6c42\u8fdb\u6765\u90fd\u662f\u4e32\u884c\u7684\uff0c\u90a3\u4e48\u6839\u672c\u5b9e\u73b0\u4e0d\u4e86\u5e76\u53d1\uff0c\u6240\u4ee5\u6211\u4eec\u5047\u5b9a\u6bcf\u4e00\u4e2a\u8bf7\u6c42\u8fdb\u6765\u4f7f\u7528\u7684\u662f\u7ebf\u7a0b\u3002<\/p>\n<p>\u90a3\u4e48\u7ebf\u7a0b\u4e2d\u6570\u636e\u4e92\u76f8\u4e0d\u9694\u79bb\uff0c\u5b58\u5728\u4fee\u6539\u6570\u636e\u7684\u65f6\u5019\u6570\u636e\u4e0d\u5b89\u5168\u7684\u95ee\u9898\u3002<\/p>\n<p>\u5047\u5b9a\u6211\u4eec\u7684\u9700\u6c42\u662f\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u8981\u8bbe\u7f6e\u503c\uff0c\u5e76\u4e14\u8be5\u7ebf\u7a0b\u6253\u5370\u8be5\u7ebf\u7a0b\u4fee\u6539\u7684\u503c\u3002<\/p>\n<pre><code class=\"language-python\">from threading import Thread,current_thread\nimport time\n\nclass Foo(object):\n    def __init__(self):\n        self.name = 0\n\nlocals_values = Foo()\n\ndef func(num):\n    locals_values.name = num\n    time.sleep(2)             # \u53d6\u51fa\u8be5\u7ebf\u7a0b\u7684\u540d\u5b57\n    print(locals_values.name, current_thread().name)\n\nfor i in range(10):\n                                    # \u8bbe\u7f6e\u8be5\u7ebf\u7a0b\u7684\u540d\u5b57\n    t = Thread(target=func,args=(i,),name=&#039;\u7ebf\u7a0b%s&#039;%i)\n    t.start()<\/code><\/pre>\n<p>\u5f88\u660e\u663e\u963b\u585e\u4e862\u79d2\u7684\u65f6\u95f4\u6240\u6709\u7684\u7ebf\u7a0b\u90fd\u5b8c\u6210\u4e86\u4fee\u6539\u503c\uff0c\u800c2\u79d2\u540e\u6240\u6709\u7684\u7ebf\u7a0b\u6253\u5370\u51fa\u6765\u7684\u65f6\u5019\u90fd\u662f9\u4e86\uff0c\u5c31\u4ea7\u751f\u4e86\u6570\u636e\u4e0d\u5b89\u5168\u7684\u95ee\u9898\u3002<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2021\/08\/08-\u7ebf\u7a0b\u4e2d\u6570\u636e\u4e0d\u5b89\u5168\u95ee\u9898\u6f14\u793a-1.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2021\/08\/08-\u7ebf\u7a0b\u4e2d\u6570\u636e\u4e0d\u5b89\u5168\u95ee\u9898\u6f14\u793a-1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p>\u6240\u4ee5\u6211\u4eec\u8981\u89e3\u51b3\u8fd9\u79cd\u7ebf\u7a0b\u4e0d\u5b89\u5168\u7684\u95ee\u9898\uff0c\u6709\u5982\u4e0b\u4e24\u79cd\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<ul>\n<li>\n<p>\u65b9\u6848\u4e00\uff1a\u662f\u52a0\u9501<\/p>\n<\/li>\n<li>\n<p>\u65b9\u6848\u4e8c\uff1a\u4f7f\u7528<code>threading.local<\/code>\u5bf9\u8c61\u628a\u8981\u4fee\u6539\u7684\u6570\u636e\u590d\u5236\u4e00\u4efd\uff0c\u4f7f\u5f97\u6bcf\u4e2a\u6570\u636e\u4e92\u4e0d\u5f71\u54cd\u3002<\/p>\n<p>\u6211\u4eec\u8981\u5b9e\u73b0\u7684\u5e76\u53d1\u662f\u591a\u4e2a\u8bf7\u6c42\u5b9e\u73b0\u5e76\u53d1\uff0c\u800c\u4e0d\u662f\u7eaf\u7cb9\u7684\u53ea\u662f\u4fee\u6539\u4e00\u4e2a\u6570\u636e\uff0c\u6240\u4ee5\u7b2c\u4e8c\u79cd\u601d\u8def\u66f4\u9002\u5408\u505a\u6211\u4eec\u6bcf\u4e2a\u8bf7\u6c42\u7684\u5e76\u53d1\uff0c\u628a\u6bcf\u4e2a\u8bf7\u6c42\u5bf9\u8c61\u7684\u5185\u5bb9\u90fd\u590d\u5236\u4e00\u4efd\u8ba9\u5176\u4e92\u76f8\u4e0d\u5f71\u54cd\u3002<\/p>\n<p><em>\u8be6\u89e3\uff1a\u4e3a\u4ec0\u4e48\u4e0d\u7528\u52a0\u9501\u7684\u601d\u8def\uff1f\u52a0\u9501\u7684\u601d\u8def\u662f\u591a\u4e2a\u7ebf\u7a0b\u8981\u771f\u6b63\u5b9e\u73b0\u5171\u7528\u4e00\u4e2a\u6570\u636e\uff0c\u5e76\u4e14\u8be5\u7ebf\u7a0b\u4fee\u6539\u4e86\u6570\u636e\u4e4b\u540e\u4f1a\u5f71\u54cd\u5230\u5176\u4ed6\u7ebf\u7a0b\uff0c\u66f4\u9002\u5408\u7c7b\u4f3c\u4e8e12306\u62a2\u7968\u7684\u5e94\u7528\u573a\u666f\uff0c\u800c\u6211\u4eec\u662f\u8981\u505a\u8bf7\u6c42\u5bf9\u8c61\u7684\u5e76\u53d1\uff0c\u60f3\u8981\u5b9e\u73b0\u7684\u662f\u8be5\u7ebf\u7a0b\u5bf9\u4e8e\u8bf7\u6c42\u5bf9\u8c61\u8fd9\u90e8\u5206\u5185\u5bb9\u6709\u4efb\u4f55\u4fee\u6539\u5e76\u4e0d\u5f71\u54cd\u5176\u4ed6\u7ebf\u7a0b\u3002\u6240\u4ee5\u4f7f\u7528\u65b9\u6848\u4e8c<\/em><\/p>\n<\/li>\n<\/ul>\n<h1>02 threading.local<\/h1>\n<p>\u591a\u4e2a\u7ebf\u7a0b\u4fee\u6539\u540c\u4e00\u4e2a\u6570\u636e\uff0c\u590d\u5236\u591a\u4efd\u6570\u636e\u7ed9\u6bcf\u4e2a\u7ebf\u7a0b\u7528,\u4e3a\u6bcf\u4e2a\u7ebf\u7a0b\u5f00\u8f9f\u4e00\u5757\u7a7a\u95f4\u8fdb\u884c\u6570\u636e\u5b58\u50a8<\/p>\n<p><strong>\u5b9e\u4f8b\uff1a<\/strong><\/p>\n<pre><code class=\"language-python\">from threading import Thread,current_thread,local\nimport time\n\nlocals_values = local()\n# \u53ef\u4ee5\u7b80\u5355\u7406\u89e3\u4e3a\uff0c\u8bc6\u522b\u5230\u65b0\u7684\u7ebf\u7a0b\u7684\u65f6\u5019\uff0c\u90fd\u4f1a\u5f00\u8f9f\u4e00\u7247\u65b0\u7684\u5185\u5b58\u7a7a\u95f4\uff0c\u76f8\u5f53\u4e8e\u6bcf\u4e2a\u7ebf\u7a0b\u5bf9\u8be5\u503c\u8fdb\u884c\u4e86\u62f7\u8d1d\u3002\n\ndef func(num):\n    locals_values.name = num\n    time.sleep(2)\n    print(locals_values.name, current_thread().name)\n\nfor i in range(10):\n    t = Thread(target=func,args=(i,),name=&#039;\u7ebf\u7a0b%s&#039;%i)\n    t.start()<\/code><\/pre>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2021\/08\/09-\u4f7f\u7528threading_local\u89e3\u51b3\u6570\u636e\u4e0d\u5b89\u5168\u95ee\u9898-1.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2021\/08\/09-\u4f7f\u7528threading_local\u89e3\u51b3\u6570\u636e\u4e0d\u5b89\u5168\u95ee\u9898-1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><br \/>\n\u5982\u4e0a\u901a\u8fc7threading.local\u5b9e\u4f8b\u5316\u7684\u5bf9\u8c61\uff0c\u5b9e\u73b0\u4e86\u591a\u7ebf\u7a0b\u4fee\u6539\u540c\u4e00\u4e2a\u6570\u636e\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u590d\u5236\u4e86\u4e00\u4efd\u6570\u636e\uff0c\u5e76\u4e14\u4fee\u6539\u7684\u4e5f\u90fd\u662f\u81ea\u5df1\u7684\u6570\u636e\u3002\u8fbe\u5230\u4e86\u6211\u4eec\u60f3\u8981\u7684\u6548\u679c\u3002<\/p>\n<h1>03 \u901a\u8fc7\u5b57\u5178\u81ea\u5b9a\u4e49threading.local<\/h1>\n<p><strong>\u5b9e\u4f8b\uff1a<\/strong><\/p>\n<pre><code class=\"language-python\">from threading import get_ident,Thread,current_thread\n# get_ident()\u53ef\u4ee5\u83b7\u53d6\u6bcf\u4e2a\u7ebf\u7a0b\u7684\u552f\u4e00\u6807\u8bb0\uff0c\nimport time\n\nclass Local(object):\n    storage = {}# \u521d\u59cb\u5316\u4e00\u4e2a\u5b57\u5178\n    get_ident = get_ident # \u62ff\u5230get_ident\u7684\u5730\u5740\n    def set(self,k,v):\n        ident =self.get_ident()# \u83b7\u53d6\u5f53\u524d\u7ebf\u7a0b\u7684\u552f\u4e00\u6807\u8bb0\n        origin = self.storage.get(ident)\n        if not origin:\n            origin={}\n        origin[k] = v\n        self.storage[ident] = origin\n    def get(self,k):\n        ident = self.get_ident() # \u83b7\u53d6\u5f53\u524d\u7ebf\u7a0b\u7684\u552f\u4e00\u6807\u8bb0\n        v= self.storage[ident].get(k)\n        return v\n\nlocals_values = Local()\ndef func(num):\n    # get_ident() \u83b7\u53d6\u5f53\u524d\u7ebf\u7a0b\u7684\u552f\u4e00\u6807\u8bb0\n    locals_values.set(&#039;KEY&#039;,num)\n    time.sleep(2)\n    print(locals_values.get(&#039;KEY&#039;),current_thread().name)\n\nfor i in range(10):\n    t = Thread(target=func,args=(i,),name=&#039;\u7ebf\u7a0b%s&#039;%i)\n    t.start()\n<\/code><\/pre>\n<p><strong>\u8bb2\u89e3\uff1a<\/strong><\/p>\n<p>\u5229\u7528<code>get_ident()<\/code>\u83b7\u53d6\u6bcf\u4e2a\u7ebf\u7a0b\u7684\u552f\u4e00\u6807\u8bb0\u4f5c\u4e3a\u952e\uff0c\u7136\u540e\u7ec4\u7ec7\u4e00\u4e2a\u5b57\u5178storage\u3002<\/p>\n<p><strong>\u5982<\/strong>\uff1a\uff5b\u7ebf\u7a0b1\u7684\u552f\u4e00\u6807\u8bb0\uff1a{k:v}\uff0c\u7ebf\u7a0b2\u7684\u552f\u4e00\u6807\u8bb0\uff1a{k:v}&#8230;&#8230;.\uff5d<\/p>\n<pre><code class=\"language-python\"> \uff5b\n    15088: {&#039;KEY&#039;: 0}, \n    8856: {&#039;KEY&#039;: 1},\n    17052: {&#039;KEY&#039;: 2}, \n    8836: {&#039;KEY&#039;: 3}, \n    13832: {&#039;KEY&#039;: 4}, \n    15504: {&#039;KEY&#039;: 5}, \n    16588: {&#039;KEY&#039;: 6}, \n    5164: {&#039;KEY&#039;: 7}, \n    560: {&#039;KEY&#039;: 8}, \n    1812: {&#039;KEY&#039;: 9}\n                    }<\/code><\/pre>\n<p><strong>\u8fd0\u884c\u6548\u679c<\/strong>\uff1a<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2021\/08\/1552981453617-1.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2021\/08\/1552981453617-1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<h1>04 \u901a\u8fc7setattr\u548cgetattr\u5b9e\u73b0\u81ea\u5b9a\u4e49threthreading.local<\/h1>\n<p><strong>\u5b9e\u4f8b<\/strong>\uff1a<\/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=\"2242\" type=\"hidden\"\/><input name=\"_init_callback\" value=\"InitLogin\" type=\"hidden\"\/><input name=\"post_id\" value=\"2242\" type=\"hidden\"\/><input name=\"rt_ype\" value=\"1\" type=\"hidden\"\/><input name=\"nonce\" value=\"826f566626\" type=\"hidden\"\/><input name=\"_wpnonce\" value=\"1f98482c41\" 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>flask\u4e4b\u5206\u6790\u7ebf\u7a0b\u548c\u534f\u7a0b 01 \u601d\u8003\uff1a\u6bcf\u4e2a\u8bf7\u6c42\u4e4b\u95f4\u7684\u5173\u7cfb \u6211\u4eec\u6bcf\u4e00\u4e2a\u8bf7\u6c42\u8fdb\u6765\u7684\u65f6\u5019\u90fd\u5f00\u4e00\u4e2a\u8fdb\u7a0b\u80af\u5b9a\u4e0d\u5408\u7406\uff0c\u90a3 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":2515,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[272],"tags":[273],"_links":{"self":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/2242"}],"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=2242"}],"version-history":[{"count":0,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/2242\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/media\/2515"}],"wp:attachment":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2242"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2242"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2242"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}