linux 操作系统升级 Python 3

#进入 python 官网下载对应版本，比如：Python-3.7.12

[root@localhost ~]# wget ​​https://www.python.org/ftp/python/3.7.12/Python-3.7.12.tgz​​

#安装依赖包

[root@localhost ~]# yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel libffi-devel gcc make

[root@localhost ~]# tar xvf Python-3.7.12.tgz

执行cd Python-3.7.12进入到解压后的Python-3.7.12目录下，依次执行如下三个命令：

[root@localhost ~]# ./configure --prefix=/usr/local/python3

[root@localhost ~]# make

[root@localhost ~]# make install

[root@localhost ~]# unlink /usr/bin/python 

[root@localhost ~]# ln -s /usr/local/python3/bin/python3 /usr/bin/python

​

#因为yum是python 2写的，所以需要修改yum脚本的python名称

vi /usr/bin/yum

#!/usr/bin/python2.7

#如果系统不安装图形化界面则不需要做以下操作

vi /usr/libexec/urlgrabber-ext-down   

#!/usr/bin/python2.7