<?xml version="1.0" encoding="utf-8"?>

<search>

<entry>

<title>video_test</title>

<link href="/2025/04/21/video/"/>

<url>/2025/04/21/video/</url>

<content type="html"><![CDATA[<h1 id="try"><a href="#try" class="headerlink" title="try"></a>try</h1><div align=center class="aspect-ratio"> <iframe src="https://player.bilibili.com/player.html?aid=113657048469239&bvid=BV12VBFYmEov&cid=27358660707&&page=1&as_wide=1&high_quality=1&danmaku=0" scrolling="no" border="0" frameborder="no" framespacing="0" high_quality=1 danmaku=1 allowfullscreen="true"> </iframe></div>]]></content>

<categories>

<category> 随想 </category>

</categories>

<tags>

<tag> test </tag>

</tags>

</entry>

<entry>

<title>test6</title>

<link href="/2025/04/21/test6/"/>

<url>/2025/04/21/test6/</url>

<content type="html"><![CDATA[<p>just test</p>]]></content>

<categories>

<category> 生活 </category>

</categories>

</entry>

<entry>

<title>test5</title>

<link href="/2025/04/21/test5/"/>

<url>/2025/04/21/test5/</url>

<content type="html"><![CDATA[<p>随便写写</p>]]></content>

<categories>

<category> 随想 </category>

</categories>

</entry>

<entry>

<title>test4</title>

<link href="/2025/04/21/test4/"/>

<url>/2025/04/21/test4/</url>

<content type="html"><![CDATA[<h2 id="文章引言"><a href="#文章引言" class="headerlink" title="文章引言"></a>文章引言</h2><p>这里可以写一些文章的引言内容，介绍文章的主要内容或者背景信息。</p><h3 id="正文内容"><a href="#正文内容" class="headerlink" title="正文内容"></a>正文内容</h3><p>这是文章的正文部分，你可以开始撰写具体的内容。</p><p><mjx-container class="MathJax" jax="SVG"><svg style="vertical-align: -0.798ex;" xmlns="http://www.w3.org/2000/svg" width="9.733ex" height="2.755ex" role="img" focusable="false" viewBox="0 -864.9 4301.8 1217.7"><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="scale(1,-1)"><g data-mml-node="math"><g data-mml-node="munder"><g data-mml-node="mo"><path data-c="6C" d="M42 46H56Q95 46 103 60V68Q103 77 103 91T103 124T104 167T104 217T104 272T104 329Q104 366 104 407T104 482T104 542T103 586T103 603Q100 622 89 628T44 637H26V660Q26 683 28 683L38 684Q48 685 67 686T104 688Q121 689 141 690T171 693T182 694H185V379Q185 62 186 60Q190 52 198 49Q219 46 247 46H263V0H255L232 1Q209 2 183 2T145 3T107 3T57 1L34 0H26V46H42Z"></path><path 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<categories>

<category> 学习 </category>

</categories>

<tags>

<tag> test </tag>

</tags>

</entry>

<entry>

<title>test3</title>

<link href="/2025/04/21/test3/"/>

<url>/2025/04/21/test3/</url>

<content type="html"><![CDATA[<p>try</p><figure class="highlight python"><table><tr><td class="code"><pre><span class="line"><span class="keyword">import</span> os</span><br><span class="line"><span class="keyword">import</span> django</span><br><span class="line"><span class="keyword">import</span> datetime</span><br><span class="line"></span><br><span class="line"><span class="keyword">from</span> django.core.wsgi <span class="keyword">import</span> get_wsgi_application</span><br><span class="line"></span><br><span class="line">os.environ.setdefault(<span class="string">'DJANGO_SETTINGS_MODULE'</span>, <span class="string">'blog.settings'</span>)</span><br><span class="line">django.setup()</span><br><span class="line"></span><br><span class="line"><span class="keyword">from</span> post.models <span class="keyword">import</span> Post, Content</span><br><span class="line"></span><br><span class="line"><span class="comment"># ps = Post.objects.all()</span></span><br><span class="line"><span class="comment"># for x in ps:</span></span><br><span class="line"><span class="comment"># print(x)</span></span><br><span class="line"><span class="comment"># print(x.postdate)</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># 增删改</span></span><br><span class="line"><span class="comment"># post对象若没指定id, save一定是新增</span></span><br><span class="line"><span class="comment"># 若post对象指定id, 一种数据库中没有对应的记录就是新增, 若有, 就是修改</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">from</span> django.db.transaction <span class="keyword">import</span> atomic</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="comment"># post = Post()</span></span><br><span class="line"><span class="comment"># try:</span></span><br><span class="line"><span class="comment"># #post.id = 101 # insert into , 由于是新增且字段是自增, 所以可以不赋值</span></span><br><span class="line"><span class="comment"># post.title = 't107'</span></span><br><span class="line"><span class="comment"># post.postdate = datetime.datetime.now(</span></span><br><span class="line"><span class="comment"># datetime.timezone(datetime.timedelta(hours=8)) # 存入数据库时都是UTC时间, 取出时转换</span></span><br><span class="line"><span class="comment"># ) # aware</span></span><br><span class="line"><span class="comment"># post.author_id = 2</span></span><br><span class="line"><span class="comment">#</span></span><br><span class="line"><span class="comment"># c = Content()</span></span><br><span class="line"><span class="comment"># c.content = 'content107'</span></span><br><span class="line"><span class="comment"># with atomic(): # 原子性操作, 保证2张表同时成功或失败</span></span><br><span class="line"><span class="comment"># post.save() # 持久化, 成功提交, 失败回滚</span></span><br><span class="line"><span class="comment"># #print(post.pk) # 若成功持久化, 则pk不为空</span></span><br><span class="line"><span class="comment">#</span></span><br><span class="line"><span class="comment"># #c.post_id = post.id</span></span><br><span class="line"><span class="comment"># c.post = post</span></span><br><span class="line"><span class="comment">#</span></span><br><span class="line"><span class="comment"># c.save()</span></span><br><span class="line"><span class="comment"># print(post.pk)</span></span><br><span class="line"><span class="comment">#</span></span><br><span class="line"><span class="comment"># except Exception as e:</span></span><br><span class="line"><span class="comment"># print(e)</span></span><br><span class="line"><span class="comment"># print('=' * 30)</span></span><br><span class="line"><span class="comment"># print(post.pk)</span></span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="comment"># 修改, 对存在的持久化了的数据进行修改: 先查后改; 先查再删除</span></span><br><span class="line"><span class="keyword">try</span>:</span><br><span class="line"> post = Post.objects.<span class="built_in">filter</span>(title=<span class="string">'t105'</span>).first() <span class="comment"># 从数据库中获取一个持久化的对象</span></span><br><span class="line"> <span class="keyword">if</span> post:</span><br><span class="line"> <span class="built_in">print</span>(post, post.pk, post.<span class="built_in">id</span>)</span><br><span class="line"></span><br><span class="line"> <span class="comment">#post.author_id = 1</span></span><br><span class="line"> <span class="comment">#post.save()</span></span><br><span class="line"></span><br><span class="line"> <span class="keyword">with</span> atomic(): <span class="comment"># 原子性操作, 保证2张表同时成功或失败</span></span><br><span class="line"> post.content.delete() <span class="comment">#※ 一对一关系中:先删除关联对象</span></span><br><span class="line"> <span class="comment"># 1/0</span></span><br><span class="line"> post.delete() <span class="comment">#※ 一对一关系中:再删除主对象</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">except</span> Exception <span class="keyword">as</span> e:</span><br><span class="line"> <span class="built_in">print</span>(e)</span><br><span class="line"> <span class="built_in">print</span>(<span class="string">'='</span> * <span class="number">30</span>)</span><br><span class="line"></span><br><span class="line"><span class="comment"># try:</span></span><br><span class="line"><span class="comment"># ret = Post.objects.filter(id__gt=100).update(author=1) # 批量更新, 危险, 慎用</span></span><br><span class="line"><span class="comment"># print(ret)</span></span><br><span class="line"><span class="comment"># except Exception as e:</span></span><br><span class="line"><span class="comment"># print(e)</span></span><br><span class="line"><span class="comment"># print('=' * 30)</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># try:</span></span><br><span class="line"><span class="comment"># ret = Post.objects.filter(id__gt=106).delete()</span></span><br><span class="line"><span class="comment"># print(ret) # Django拦截删除操作, 不推荐使用该方法</span></span><br><span class="line"><span class="comment"># except Exception as e:</span></span><br><span class="line"><span class="comment"># print(e)</span></span><br><span class="line"><span class="comment"># print('=' * 30)</span></span><br><span class="line"></span><br></pre></td></tr></table></figure>]]></content>

<categories>

<category> 编程 </category>

</categories>

<tags>

<tag> python </tag>

<tag> django </tag>

</tags>

</entry>

<entry>

<title>test2</title>

<link href="/2025/04/20/test2/"/>

<url>/2025/04/20/test2/</url>

<content type="html"><![CDATA[<h1 id="Test2"><a href="#Test2" class="headerlink" title="Test2"></a>Test2</h1><p>A simple clicker</p><figure class="highlight python"><table><tr><td class="code"><pre><span class="line"><span class="keyword">import</span> pyautogui</span><br><span class="line"><span class="keyword">import</span> time</span><br><span class="line"><span class="keyword">import</span> keyboard</span><br><span class="line"></span><br><span class="line"><span class="keyword">def</span> <span class="title function_">clicker</span>(<span class="params">click_interval</span>):</span><br><span class="line"> <span class="built_in">print</span>(<span class="string">"Executing clicker, press 'ESC' to stop"</span>)</span><br><span class="line"> <span class="keyword">while</span> <span class="keyword">not</span> keyboard.is_pressed(<span class="string">'esc'</span>):</span><br><span class="line"> pyautogui.click()</span><br><span class="line"> <span class="built_in">print</span>(<span class="string">"Clicked!"</span>)</span><br><span class="line"> time.sleep(click_interval)</span><br><span class="line"></span><br><span class="line"><span class="keyword">def</span> <span class="title function_">main</span>():</span><br><span class="line"> <span class="built_in">print</span>(<span class="string">"please input click interval: (s)"</span>)</span><br><span class="line"> click_interval = <span class="built_in">float</span>(<span class="built_in">input</span>())</span><br><span class="line"></span><br><span class="line"> <span class="built_in">print</span>(<span class="string">"press 'F' to execute"</span>)</span><br><span class="line"> keyboard.wait(<span class="string">'f'</span>)</span><br><span class="line"></span><br><span class="line"> clicker(click_interval)</span><br><span class="line"></span><br><span class="line"><span class="keyword">if</span> __name__ == <span class="string">"__main__"</span>:</span><br><span class="line"> main()</span><br></pre></td></tr></table></figure>]]></content>

<categories>

<category> 编程 </category>

</categories>

<tags>

<tag> python </tag>

</tags>

</entry>

<entry>

<title>test</title>

<link href="/2025/04/20/test/"/>

<url>/2025/04/20/test/</url>

<content type="html"><![CDATA[<h1 id="just-a-test"><a href="#just-a-test" class="headerlink" title="just a test"></a>just a test</h1><p>hhh</p><h1 id="code-test"><a href="#code-test" class="headerlink" title="code test"></a>code test</h1><figure class="highlight python"><table><tr><td class="code"><pre><span class="line"><span class="keyword">from</span> urllib <span class="keyword">import</span> request, parse</span><br><span class="line"><span class="keyword">from</span> urllib.request <span class="keyword">import</span> urlopen, Request</span><br><span class="line"><span class="keyword">from</span> http.client <span class="keyword">import</span> HTTPResponse <span class="comment"># 很简陋</span></span><br><span class="line"><span class="keyword">import</span> random</span><br><span class="line"></span><br><span class="line"><span class="comment"># request 发起请求</span></span><br><span class="line"><span class="comment"># urlopen(url, data=None) # data: None -&gt; GET, data: data -&gt; POST</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># 判断爬虫: 1. User-Agent; 2. 行为</span></span><br><span class="line"></span><br><span class="line"></span><br><span class="line">site = <span class="string">&#x27;http://www.bing.com/&#x27;</span></span><br><span class="line">site = <span class="string">&#x27;http://httpbin.org/get/&#x27;</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># 1. 伪装</span></span><br><span class="line">ua_list = [</span><br><span class="line"> <span class="string">&quot;Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko)Chrome/57.0.2987.133 Safari/537.36&quot;</span>,<span class="comment"># chrome</span></span><br><span class="line"> <span class="string">&quot;Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN) AppleWebKit/537.36 (KHTML, like Gecko)Version/5.0.1 Safari/537.36&quot;</span>, <span class="comment"># safafi</span></span><br><span class="line"> <span class="string">&quot;Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:50.0) Gecko/20100101 Firefox/50.0&quot;</span>, <span class="comment"># Firefox</span></span><br><span class="line"> <span class="string">&quot;Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)&quot;</span> <span class="comment"># IE</span></span><br><span class="line">]</span><br><span class="line">ua = random.choice(ua_list)</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="comment"># 构造request对象</span></span><br><span class="line">request = Request(site) <span class="comment"># , headers=&#123;&#125;</span></span><br><span class="line">request.add_header(<span class="string">&#x27;user-Agent&#x27;</span>, ua) <span class="comment"># ※ Native, App, Web App 在http请求中会发送 User-Agent</span></span><br><span class="line"></span><br><span class="line">response:HTTPResponse = urlopen(request) <span class="comment"># request =&gt; response</span></span><br><span class="line"></span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="keyword">with</span> response:</span><br><span class="line"> <span class="built_in">print</span>(<span class="built_in">type</span>(response), response)</span><br><span class="line"> <span class="built_in">print</span>(response.status, response.reason)</span><br><span class="line"> <span class="built_in">print</span>(response.headers) <span class="comment"># == x.info()</span></span><br><span class="line"> <span class="built_in">print</span>(response.geturl()) <span class="comment"># 发生 301 302</span></span><br><span class="line"> <span class="built_in">print</span>(response.read()) <span class="comment"># bytes</span></span><br><span class="line"> <span class="comment"># bytes =&gt; str ?</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># 请求头 &quot;User-Agent&quot;: &quot;Python-urllib/3.12&quot;</span></span><br><span class="line"></span><br><span class="line"><span class="built_in">print</span>(response.isclosed())</span><br><span class="line"><span class="built_in">print</span>(response.closed)</span><br><span class="line"></span><br></pre></td></tr></table></figure>]]></content>

<categories>

<category> 编程 </category>

</categories>

<tags>

<tag> python </tag>

</tags>

</entry>

</search>