1、安裝Python依賴包
yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel
2、解壓和安裝軟件包
2.1、去官網下載最新版tgz後綴的源碼包
2.2、點擊後往下拉,找到源碼包鼠標懸浮在上面複製鏈接
2.3 用wget命令複製2.2的鏈接到linux的/opt目錄下
wget xxxxx.tgz /opt
2.4 解壓軟件包
注:src目錄是存放源碼的目錄
tar -xzvf /opt/Python-3.9.6.tgz -C /usr/local/src
2.5 cd到解壓的Python-3.9.6目錄
cd /usr/local/src/Python-3.9.6
2.6 配置python [ ./configure ]
./configure --prefix=/usr/local/python3
2.7 安裝python [ make && make install ]
make && make install
3,添加環境變量
3.0,可以用echo $PATH 查看當前系統的環境變量配置
3.1,cd到/etc/profile.d/
cd /etc/profile.d/
3.2,創建一個文件python3.sh
vi python3.sh
3.3,寫入python3的path到環境變量
注:如果這一步發現/usr/local目錄下沒有python3目錄,返回2.6步驟檢查prefix後面的目錄是不是/usr/local/python3
export PATH="$PATH:/usr/local/python3/bin"
3.4,重新載入環境變量
source ../profile
3.5, 查看當前環境變量是否添加
echo $PATH
3.6,輸入命令python按tab鍵看安裝的python版本應該在裏面了
[root@izo4t6je6mwbb8z profile.d]# python
python2.7 python3 python3.9 python-config
python2.7-config python3.6 python3.9-config
python2-config python3.6m python3-config