centos7.2安装Python3.6

安装依赖包

yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gcc make 

安装Python3.7

#运行这个命令添加epel扩展源
yum -y install epel-release

#安装pip
yum install python-pip

#下载python3.6
wget https://www.python.org/ftp/python/3.6.4/Python-3.6.4.tar.xz

#解压
xz -d Python-3.6.4.tar.xz
tar -xf Python-3.6.4.tar

#进入解压后的目录，依次执行下面命令进行手动编译
./configure prefix=/usr/local/python3
make && make install

添加软链接

#将原来的链接备份
mv /usr/bin/python /usr/bin/python.bak

#添加python3的软链接
ln -s /usr/local/python3/bin/python3.6 /usr/bin/python

检测

#测试是否安装成功了
python -V

如图：

则安装成功。

更改yum配置

vim /usr/bin/yum
把#! /usr/bin/python修改为#! /usr/bin/python2

vim /usr/libexec/urlgrabber-ext-down
把#! /usr/bin/python 修改为#! /usr/bin/python2