Centos8 安裝Python

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目錄

• 安裝python
• 設置系統默認python版本

安裝python

1. 更新系統軟件包

   [root@centos ~] dnf update -y
   

2. 安裝python

   python 2的安裝

   [root@centos ~] dnf install python2 -y
   

   python 3的安裝

   [root@centos ~] dnf install python3 -y
   

3. 驗證 python 的安裝

   python 2 的驗證

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

   python 3的驗證

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

設置系統默認python版本

1. python 2 默認

   [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 默認

   [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
   

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