转载CentOS 7安装Python3.5，并与Python2.7兼容并存

Posted 2020-08-13

CentOS 7下安装Python3.5

•安装python3.5可能使用的依赖

yum install openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel

•到python官网找到下载路径, 用wget下载

wget https://www.python.org/ftp/python/3.5.1/Python-3.5.1.tgz

•解压tgz包

tar -zxvf Python-3.5.1.tgz

•把python移到/usr/local下面

mv Python-3.5.1 /usr/local

•删除旧版本的python依赖

ll /usr/bin | grep python

rm -rf /usr/bin/python

•进入python目录

cd /usr/local/Python-3.5.1/

•配置

./configure

•编译 make

make

•编译，安装

make install

•删除旧的软链接，创建新的软链接到最新的python

rm -rf /usr/bin/python

ln -s /usr/local/bin/python3.5 /usr/bin/python

python -V

 

因为yum使用python2，因此替换为python3后可能无法正常工作，继续使用这个python2.7.5

因此修改yum配置文件(sudo vi /usr/bin/yum)。  把文件头部的#!/usr/bin/python改成#!/usr/bin/python2.7保存退出即可

Enjoy your Python!