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<h3 id="环境"><a href="#环境" class="headerlink" title="环境"></a>环境</h3><pre><code>- Linux: Ubuntu 16.04
- uWSGI 2.0.18
- Flask 1.0.2
- supervisor 3.2.0
- nginx/1.8.1
</code></pre><h3 id="首先区分几个概念"><a href="#首先区分几个概念" class="headerlink" title="首先区分几个概念"></a>首先区分几个概念</h3><p><img src="https://img2018.cnblogs.com/blog/778496/201904/778496-20190401002529915-1118976912.png" alt="uwsgi和WSGI协议"></p>
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<h4 id="python读取大文件"><a href="#python读取大文件" class="headerlink" title="python读取大文件"></a>python读取大文件</h4><ol>
<li>较pythonic的方法，使用with结构 <ul>
<li>文件可以自动关闭</li>
<li>异常可以在with块内处理<figure class="highlight python"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">with</span> open(filename, <span class="string">'rb'</span>) <span class="keyword">as</span> f: </span><br><span class="line"> <span class="keyword">for</span> line <span class="keyword">in</span> f:</span><br><span class="line"> <do someting <span class="keyword">with</span> the line></span><br></pre></td></tr></table></figure>
</li>
</ul>
</li>
</ol>
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