1 安装依赖

sudo yum -y updatesudo yum -y install openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel psmisc libffi-devel -ysudo yum -y groupinstall "Development Tools"

2 安装必需的 openssl >= 1.1.1

wget https://www.openssl.org/source/openssl-1.1.1q.tar.gz --no-check-certificatetar zxf openssl-1.1.1q.tar.gzcd openssl-1.1.1q./config --prefix=/usr/local/openssl-1.1.1sudo make && sudo make install

3 安装python3.11.2

# 下载wget https://www.python.org/ftp/python/3.11.2/Python-3.11.2.tgz# 解压tar -xf Python-3.11.2.tgz# 进入目标文件cd Python-3.11.2# 配置安装路径：/usr/local/python311
# 把python3.11.2 编译安装到/usr/local/python311路径下./configure --prefix=/usr/local/python311# 编译并安装,如果报错，说明缺依赖yum install openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel psmisc libffi-devel zlib* libffi-devel  -ymake &&  make install# 建立软连接：/usr/local/python311路径不在环境变量，终端命令 python3，pip3
cd /usr/local/python311/bin
ln -s /usr/local/python311/bin/python3 /usr/bin/python3
ln -s /usr/local/python311/bin/pip3 /usr/bin/pip3# 机器上有多个python和pip命令，对应关系如下
python       2.x      pip 
python3      3.6      pip3
python3.11    3.11      pip3.11# 删除安装包与文件：
rm -rf Python-3.11.2
rm -rf Python-3.11.2.tgz

注意：使用pip3，报错

1 先安装EPEL
yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm2 将原有的备份epel.repo和epel-testing.repo
mv /etc/yum.repos.d/epel.repo /etc/yum.repos.d/epel.repo.backmv /etc/yum.repos.d/epel-testing.repo /etc/yum.repos.d/epel-testing.repo.back3 重新安装epel.repo
sudo wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo4 再运行如下命令，安装pip3
sudo yum install python3-pip