CentOS7.6安装python3.6.8一把成

yum -y install vim unzip net-tools && yum -y install wget && yum -y install bzip2 && yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel && yum -y install libglvnd-glx && yum -y install gcc gcc-c++
wget https://registry.npmmirror.com/-/binary/python/3.6.8/Python-3.6.8.tgz #下载
tar -xvf Python-3.6.8.tgz && cd Python-3.6.8/
./configure --prefix=/usr/local/python3.6
make -j $(nproc) && make install #编译安装
ln -s /usr/local/python3.6/bin/python3.6 /usr/bin/python3 #添加python3软链接
ln -s /usr/local/python3.6/bin/pip3 /usr/bin/pip3 #添加pip3软链接
python3 --version #查看版本

新创建的云主机，在shell中刷此脚本即可。

删除旧版本Python 安装新版本

rm -rf /usr/local/python3.6
wget https://www.python.org/ftp/python/3.8.5/Python-3.8.5.tgz
tar -xvf Python-3.8.5.tgz && cd Python-3.8.5/
./configure --prefix=/usr/local/python3.8
make -j $(nproc) && make install
ln -sf /usr/local/python3.8/bin/python3.8 /usr/bin/python3
ln -sf /usr/local/python3.8/bin/pip3 /usr/bin/pip3
python3 --version #查看版本