升级到python3后对yum的修改

yum默认使用python2, 更改系统默认Python为Python3后需要对yum的文件进行修改

安装高版本Python

yum  -y install   python36

#离线安装
yum  -y install  yum-utils
yumdownloader  python36   --resolve  --destdir=./ 

变更yum配置

首先是更改系统默认的python链接指向python3
然后修改yum的配置

ln -s  /usr/bin/python3.6    /usr/bin/python
ln -s  /usr/bin/python3.6    /usr/bin/python3
cd /usr/bin
ls    yum*  |  xargs -l    sed   -i  's@#!/usr/bin/python@#!/usr/bin/python2@'
ls    yum*  |  xargs -l    grep "python"
sed   -i  's@#!/usr/bin/python@#!/usr/bin/python2@'   /usr/libexec/urlgrabber-ext-down

##安装软件测试
##yum  -y install  wget 
ln  -sv /usr/bin/pip3  /usr/bin/pip

参考:
https://blog.csdn.net/hobohero/article/details/54381475