Python 修改 pip 源为国内源
<p>1.临时换源：</p><div class="cnblogs_code">
<pre> <span style="color: rgba(0, 128, 0, 1)">#</span><span style="color: rgba(0, 128, 0, 1)">清华源</span>
pip install markdown -i https://pypi.tuna.tsinghua.edu.cn/<span style="color: rgba(0, 0, 0, 1)">simple
</span><span style="color: rgba(0, 128, 0, 1)">#</span><span style="color: rgba(0, 128, 0, 1)"> 阿里源</span>
pip install markdown -i https://mirrors.aliyun.com/pypi/simple/
<span style="color: rgba(0, 128, 0, 1)">#</span><span style="color: rgba(0, 128, 0, 1)"> 腾讯源</span>
pip install markdown -i http://mirrors.cloud.tencent.com/pypi/<span style="color: rgba(0, 0, 0, 1)">simple
</span><span style="color: rgba(0, 128, 0, 1)">#</span><span style="color: rgba(0, 128, 0, 1)"> 豆瓣源</span>
pip install markdown -i http://pypi.douban.com/simple/</pre>
</div>
<p>2.永久换源：</p>
<div class="cnblogs_code">
<pre><span style="color: rgba(0, 128, 0, 1)">#</span><span style="color: rgba(0, 128, 0, 1)"> 清华源</span>
pip config set <span style="color: rgba(0, 0, 255, 1)">global</span>.index-url https://pypi.tuna.tsinghua.edu.cn/<span style="color: rgba(0, 0, 0, 1)">simple
</span><span style="color: rgba(0, 128, 0, 1)">#</span><span style="color: rgba(0, 128, 0, 1)"> 阿里源</span>
pip config set <span style="color: rgba(0, 0, 255, 1)">global</span>.index-url https://mirrors.aliyun.com/pypi/simple/
<span style="color: rgba(0, 128, 0, 1)">#</span><span style="color: rgba(0, 128, 0, 1)"> 腾讯源</span>
pip config set <span style="color: rgba(0, 0, 255, 1)">global</span>.index-url http://mirrors.cloud.tencent.com/pypi/<span style="color: rgba(0, 0, 0, 1)">simple
</span><span style="color: rgba(0, 128, 0, 1)">#</span><span style="color: rgba(0, 128, 0, 1)"> 豆瓣源</span>
pip config set <span style="color: rgba(0, 0, 255, 1)">global</span>.index-url http://pypi.douban.com/simple/<br># 换回默认源<br>pip config unset global.index-url</pre>
</div>
<p> </p>
<div id="cnblogs_post_body" class="blogpost-body cnblogs-markdown">
<h1 id="autoid-0-0-0">pip换源的方式</h1>
<blockquote>
<p>在使用Python安装包工具pip时经常会出现下载很慢的情况，这其中有很大一部分原因和pip的源有关，在我们安装python后，通常python解释器自带pip这个工具，但是这里pip是设置的默认源，也就是官方源：</p>
<p><code>https://pypi.org/simple</code>，这个源在国内的下载速度是很慢的（精通FQ的大神另说），所以我们为了提高包的下载速度我们可以通过换源来实现。</p>
</blockquote>
<h3 id="autoid-0-0-0">PYPI国内源路径</h3>
<ul>
<li>
<p>阿里云 http://mirrors.aliyun.com/pypi/simple/</p>
</li>
<li>
<p>豆瓣(douban) http://pypi.douban.com/simple/</p>
</li>
<li>
<p>清华大学 https://pypi.tuna.tsinghua.edu.cn/simple/</p>
</li>
<li>
<p>中国科学技术大学 http://pypi.mirrors.ustc.edu.cn/simple/</p>
</li>
</ul>
<h3 id="autoid-0-1-0">换源方式</h3>
<p>这里我们提供两种换源的方式：</p>
<ol>
<li>临时换源</li>
<li>永久换源</li>
</ol>
<h4 id="autoid-0-2-0">临时换源</h4>
<p>临时换源只需要在pip安装包时，加上一个<code>-i</code>参数后接源的url即可：</p>
<pre><code class="language-cmd hljs dos"># 下载python中的Django包，这里使用的是豆瓣源
pip install django -i http://pypi.douban.com/simple
</code></pre>
<p>显然不是一个一劳永逸的方法，只有下少量包的时候有使用的场景，下面我要介绍永久换源的方法，通过这个方式换源，那么以后我们下载的包就可以全部从这个url中下载了，这样大大减轻了我们的工作量，明显比临时换源的方法更好。</p>
<h4 id="autoid-0-2-1">永久换源（更换默认源）</h4>
<h5 id="autoid-0-2-2">Linux</h5>
<ol>
<li>
<p>在根目录下创建/修改<code>～/.pip/pip.conf</code>pip配置文件；</p>
</li>
<li>
<p>进入文件新增/修改内容；</p>
<pre><code class="hljs ini"><span class="hljs-section">
<span class="hljs-attr">index-url=http://pypi.douban.com/simple
<span class="hljs-section">
<span class="hljs-attr">trusted-host=pypi.douban.com
</span></span></span></span></code></pre>
</li>
<li>
<p>保存文件并退出；</p>
</li>
</ol>
<h5 id="autoid-0-2-2">Windows</h5>
<ol>
<li>windows在%HOMEPATH%\pip\pip.ini中修改上面第二步的内容；(例如：C:\Users\hp\AppData\Roaming\pip\pip.ini)</li>
<li>保存文件退出；</li>
</ol>
<h3 id="autoid-0-2-2">常见问题</h3>
<ul>
<li>
<p>安装包的时候出现</p>
<pre><code class="hljs mipsasm">Collecting <span class="hljs-keyword">beautifulsoup4
The repository located <span class="hljs-built_in">at mirrors.aliyun.com is not a trusted <span class="hljs-keyword">or secure host <span class="hljs-keyword">and is <span class="hljs-keyword">being ignored. If this repository is available via HTTPS it is recommended to use HTTPS <span class="hljs-keyword">instead, otherwise you may silence this warning <span class="hljs-keyword">and allow it anyways with ‘–trusted-host mirrors.aliyun.com’.
Could not find a version that satisfies the requirement <span class="hljs-keyword">beautifulsoup4 (from versions: )
No matching <span class="hljs-keyword">distribution found for <span class="hljs-keyword">beautifulsoup4
</span></span></span></span></span></span></span></span></span></span></code></pre>
<p>这是一个问题是在pip镜像升级报警，只需要添加信任源即可：</p>
<ul>
<li>
<p>临时换源处理</p>
<pre><code class="language-cmd hljs dos">pip install beautifulsoup4 --trusted-host mirrors.aliyun.com
</code></pre>
</li>
<li>
<p>更换默认源配置（一劳永逸）</p>
<pre><code class="language-cmd hljs dos">
trusted-host=pypi.douban.com
</code></pre>
</li>
</ul>
</li>
</ul>
</div><br><br>
来源：https://www.cnblogs.com/137point5/p/15000954.html
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