一.下載python3源碼包
cd /tmp/
wget https://www.python.org/ftp/python/3.6.2/Python-3.6.2.tgz
二.下載python3編譯的依賴包(復制粘貼)
yum install gcc patch libffi-devel python-devel zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel -y
#gcc :c編譯器 #python-devel python 開發包 #openssl-devel 用於pythn的ssl模塊 #sqlite-devel 輕量級數據庫
三 解壓
tar -xvf Python-3.6.2.tgz
四 進入源碼包
cd Python-3.6.2
五 編譯且安裝
1 指定安裝目錄
./configure --prefix=/opt/python/ --prefix 這個參數 是制定一個安裝路徑 /opt/python36/bin/python
2 編譯並安裝
make & make install
六 配置python3的環境變量
1 獲取python3的解析器的位置
/opt/python/bin
2 獲取系統環境變量
$PATH
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin:/root/bin
3 讀取配置文件/etc/profile
vim /etc/profile
PATH=/opt/python/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin
七 測試安裝是否成功