yum 安装 python36 及 pip

yum install epel-release

yum -y install sqlite  sqlite-devel

yum install python36  python36u-pip  -y
python3.6  -m  pip install --upgrade pip

mv   /usr/bin/python  /tmp/
ln -s /usr/bin/python3.6    /usr/bin/python

sed  -i    's/\#\!\/usr\/bin\/python/\#\!\/usr\/bin\/python2/'   /usr/bin/yum
sed  -i    's/\#\! \/usr\/bin\/python/\#\! \/usr\/bin\/python2/'   /usr/libexec/urlgrabber-ext-down