CentOS7.5将python升级至3.X版本，xz文件解压，升级python后如何使用yum

#下载路径，也可直接使用wget进行下载
https://www.python.org/ftp/python/
#python3.10需要openssl1.1.1版本，需要yum安装
yum -y install openssl*
#解压下载的python文件，并进入解压目录
#编译安装，使用$?检查每一步是否报错
./configure --prefix=/usr/;ocal/python3
make
make install

1，将老版本文件备份

mv /usr/bin/python /usr/bin/python_bak

2，创建新版本软连接

ln -s /usr/local/python3/bin/python3  /usr/bin/python

3，查看最新版本

python -V

yum -y install xz
xz -d *tar..xz
tar xf *.tar

或

tar xvf *.tar.xz

File “/usr/bin/yum”, line 30
except KeyboardInterrupt, e:
^^^^^^^^^^^^^^^^^^^^
SyntaxError: multiple exception types must be parenthesized

[root@localhost ~]# whereis python
python: /usr/bin/python /usr/bin/python2.7 /usr/lib/python2.7 /usr/lib64/python2.7 /etc/python /usr/include/python2.7 /usr/share/man/man1/python.1.gz

修改 /usr/bin/yum第一行#!/usr/bin/python为#!/usr/bin/python_2.7

[root@localhost ~]# vim /usr/bin/yum 
#!/usr/bin/python_2.7

https://blog.csdn.net/weixin_42678675/article/details/124033131