安装python3

yum -y install yum-utils
yum-builddep python
curl -O https://www.python.org/ftp/python/3.8.0/Python-3.8.0.tgz
tar xf Python-3.8.0.tgz
cd Python-3.8.0
./configure
make
make install

设置python3为默认版本

vi /etc/profile.d/python.sh         #编辑用户自定义配置，输入alias参数
?
alias python=‘/usr/local/bin/python3.8‘
?
source /etc/profile.d/python.sh     #重启会话使配置生效

安装pip

wget https://bootstrap.pypa.io/get-pip.py
?
python get-pip.py -i https://pypi.tuna.tsinghua.edu.cn/simple/

Centos7 安装python3.8和pip

原文：https://www.cnblogs.com/wintrysec/p/11963807.html