[Linux] CentOS7使用源码包方式安装python3.9

1.安装依赖包

yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gcc make libffi-devel

2.下载Python3.9的源码包，并上传至待安装的环境

Python Release Python 3.9.6 | Python.org

 3.解压源码包

cd /srv/Python396/
tar -xzvf Python-3.9.6.tgz

4.配置安装位置

[root@vm-1 Python396]# cd Python-3.9.6/
[root@vm-1 Python-3.9.6]# ./configure prefix=/usr/local/python3

5.构建和安装

make && make install

最后会有个添加环境变量的提示

执行python3找不到命令

  6.添加环境变量至PATH

[root@vm-1 bin]# echo $PATH
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin
[root@vm-1 bin]# export PATH="/usr/local/python3/bin":$PATH
[root@vm-1 bin]# echo $PATH
/usr/local/python3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin
[root@vm-1 bin]#

为当前用户永久添加环境变量

[root@vm-1 bin]# vim ~/.bashrc

---------------------------------
添加如下行

export PATH="/usr/local/python3/bin":$PATH

---------------------------------
[root@vm-1 bin]# source ~/.bashrc

现在可以直接执行python3了

参考资料：linux安装python3.9 https://blog.csdn.net/cowbin2012/article/details/109465795