详解linux下安装python3环境
<p><strong>1、linux下安装python3</strong></p>
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a、 准备编译环境(环境如果不对的话，可能遇到各种问题，比如wget无法下载https链接的文件)</p>
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<code class="bash plain">yum groupinstall </code><code class="bash string">'Development Tools'</code>
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<code class="bash plain">yum </code><code class="bash functions">install</code> <code class="bash plain">zlib-devel </code><code class="bash functions">bzip2</code><code class="bash plain">-devel openssl-devel ncurses-devel </code>
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<strong>2 下载 Python3.5代码包</strong></p>
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<code class="bash plain">wget https:</code><code class="bash plain">//www</code><code class="bash plain">.python.org</code><code class="bash plain">/ftp/python/3</code><code class="bash plain">.5.0</code><code class="bash plain">/Python-3</code><code class="bash plain">.5.0.</code><code class="bash functions">tar</code><code class="bash plain">.xz</code>
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在安装包中有一个README的文件，里面有写如何安装</p>
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<code class="bash functions">tar</code> <code class="bash plain">Jxvf Python-3.5.0.</code><code class="bash functions">tar</code><code class="bash plain">.xz</code>
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<code class="bash functions">cd</code> <code class="bash plain">Python-3.5.0</code>
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<code class="bash plain">.</code><code class="bash plain">/configure</code> <code class="bash plain">--prefix=</code><code class="bash plain">/usr/local/python3</code>
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<code class="bash functions">make</code> <code class="bash plain">&& </code><code class="bash functions">make</code> <code class="bash functions">install</code>
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做软链：</p>
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<code class="bash functions">ln</code> <code class="bash plain">-s </code><code class="bash plain">/usr/local/python3/bin/python3</code><code class="bash plain">.5 </code><code class="bash plain">/usr/local/bin/python3</code>
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安装成功了！</p>
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如果提示：<span>Ignoring ensurepip failure: pip 7.1.2 requires SSL/TLS</span></p>
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这是原因没有安装或升级oenssl:</p>
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<code class="bash plain">yum </code><code class="bash functions">install</code> <code class="bash plain">openssl-devel</code>
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再次重复编译方案python3.5:</p>
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最终如下：</p>
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<img title="详解linux下安装python3环境" alt="详解linux下安装python3环境" src="https://zhuji.jb51.net/uploads/img/202305/d2504b5a825f3d810c35beac66a9cf46.jpg"></p>
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提示同时成功安装pip-7.12与setuptools！</p>
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pip3与pip都提示没有错误！</p>
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做软链：</p>
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<code class="bash functions">ln</code> <code class="bash plain">-s </code><code class="bash plain">/usr/local/python3/bin/pip3</code><code class="bash plain">.5 </code><code class="bash plain">/usr/local/bin/pip</code>
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升级pip到最新版本：</p>
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<code class="bash plain">pip </code><code class="bash functions">install</code> <code class="bash plain">--upgrade pip</code>
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pip安装成功啦！</p>
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注：--no-check-certificate 表示安装时“不检查证书”，不加上可能无法安装。</p>
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<strong> 2.安装包</strong></p>
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requests包：</p>
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<code class="bash plain">pip </code><code class="bash functions">install</code> <code class="bash plain">requests</code>
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pyquery包：</p>
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<code class="bash plain">pip </code><code class="bash functions">install</code> <code class="bash plain">pyquery</code>
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pymysql包：</p>
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<code class="bash plain">pip </code><code class="bash functions">install</code> <code class="bash plain">pymysql</code>
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以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。</p>
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原文链接：http://www.cnblogs.com/feng18/p/5854912.html</p>
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