Centos8 安装Python

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目录

• 安装python
• 设置系统默认python版本

安装python

1. 更新系统软件包

   [root@centos ~] dnf update -y
   

2. 安装python

   python 2的安装

   [root@centos ~] dnf install python2 -y
   

   python 3的安装

   [root@centos ~] dnf install python3 -y
   

3. 验证 python 的安装

   python 2 的验证

   [root@centos ~] python2 --version
   Python 2.7.17
   

   python 3的验证

   [root@centos ~] python3 --version
   Python 3.8.0
   

设置系统默认python版本

1. python 2 默认

   [root@centos ~] whereis python2
   python2: /usr/bin/python2 /usr/bin/python2.7 /usr/lib/python2.7 /usr/lib64/python2.7 ...
   [root@centos ~] alternatives --set python /usr/bin/python2
   [root@centos ~] python --version
   Python 2.7.17
   

2. python 3 默认

   [root@centos ~] whereis python3
   python3: /usr/bin/python3.8 /usr/bin/python3.6 ...
   [root@centos ~] alternatives --set python /usr/bin/python3
   [root@centos ~] python --version
   Python 3.6.8
   

参考:
[1]:https://www.liquidweb.com/kb/how-to-install-python-on-centos-8/