1.下载对应的python版本（使用源码安装）

wget https://www.python.org/ftp/python/3.8.3/Python-3.8.3.tgz

进行安装编译

tar -zxvf Python-3.8.3.tgz && cd /root/Python-3.8.3

./configure --prefix=/usr/local/python3.8.3

make && make install

实现数据库的切换以及添加

查看可用的版本

root@wadequ-ThinkPad-L13:~/Python-3.8.3# ls /usr/bin/python* -lh
lrwxrwxrwx 1 root root   24 9月  24 11:02 /usr/bin/python -> /etc/alternatives/python
lrwxrwxrwx 1 root root    9 4月  16  2018 /usr/bin/python2 -> python2.7
-rwxr-xr-x 1 root root 3.5M 3月   9  2023 /usr/bin/python2.7
lrwxrwxrwx 1 root root   33 3月   9  2023 /usr/bin/python2.7-config -> x86_64-linux-gnu-python2.7-config
lrwxrwxrwx 1 root root   16 4月  16  2018 /usr/bin/python2-config -> python2.7-config
lrwxrwxrwx 1 root root    9 5月   8  2021 /usr/bin/python3 -> python3.6
-rwxr-xr-x 1 root root 5.3M 12月  7  2022 /usr/bin/python3.10
-rwxr-xr-x 2 root root 4.4M 3月  11  2023 /usr/bin/python3.6
lrwxrwxrwx 1 root root   33 3月  11  2023 /usr/bin/python3.6-config -> x86_64-linux-gnu-python3.6-config
-rwxr-xr-x 2 root root 4.4M 3月  11  2023 /usr/bin/python3.6m
lrwxrwxrwx 1 root root   34 3月  11  2023 /usr/bin/python3.6m-config -> x86_64-linux-gnu-python3.6m-config
lrwxrwxrwx 1 root root   16 10月 25  2018 /usr/bin/python3-config -> python3.6-config
lrwxrwxrwx 1 root root   10 5月   8  2021 /usr/bin/python3m -> python3.6m
lrwxrwxrwx 1 root root   17 10月 25  2018 /usr/bin/python3m-config -> python3.6m-config
lrwxrwxrwx 1 root root   16 4月  16  2018 /usr/bin/python-config -> python2.7-config

添加切换版本

update-alternatives --install /usr/bin/python python /usr/bin/python2 100
root@wadequ-ThinkPad-L13:~/Python-3.8.3# update-alternatives --install /usr/bin/python python /usr/bin/python2 100
root@wadequ-ThinkPad-L13:~/Python-3.8.3# 
root@wadequ-ThinkPad-L13:~/Python-3.8.3# update-alternatives --config python
有 4 个候选项可用于替换 python (提供 /usr/bin/python)。

  选择       路径                                优先级  状态
------------------------------------------------------------
  0            /usr/bin/python3.10                    100       自动模式
  1            /usr/bin/python2                       100       手动模式
* 2            /usr/bin/python3.10                    100       手动模式
  3            /usr/bin/python3.6                     100       手动模式
  4            /usr/local/python3.8.3/bin/python3.8   100       手动模式

要维持当前值[*]请按<回车键>，或者键入选择的编号：2   //选择对应的序号即可
       
root@wadequ-ThinkPad-L13:~/Python-3.8.3# python
Python 3.10.9 (main, Dec  7 2022, 01:11:56) [GCC 7.5.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 

至此完成