环境: centos7.5
版本：python3.8
1、依赖包安装
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 libffi-devel
2、下载包：
https://www.python.org/ftp/python/3.8.0/
wget https://www.python.org/ftp/python/3.8.0/Python-3.8.0a1.tgz
3、解压：
tar -zxvf Python-3.8.0.tgz
4、安装：
cd Python-3.8.0 ./configure --prefix=/usr/local/python3 make && make install
5、建立软连接
ln -s /usr/local/python3/bin/python3.8 /usr/bin/python3 ln -s /usr/local/python3/bin/pip3.8 /usr/bin/pip3
6、测试一下python3是否可以用
python3
pip3