Centos6.5中實現python2與python3的並存
linux下python的安裝
安裝步驟如下
1 準備編譯環境
yum groupinstall ‘Development Tools‘
yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel sqlit
2 下載 Python3.5代碼包
wget https://www.python.org/ftp/python/3.5.2/Python-3.5.2.tar.xz
3 編譯
tar Jxvf Python-3.5.2.tar.xz
cd Python-3.5.2
./configure --prefix=/usr/local/python3
make && make install
4 設置環境變量
echo ‘export PATH=$PATH:/usr/local/python3/bin‘ >> ~/.bashrc
5 設置目錄(這樣做的目的是在系統任意目錄敲入python3調用的是python3.5的命令)
mv /usr/bin/python /usr/local/python.bak
rm -rf /usr/local/python2
ln -sv /usr/local/python2.6 /usr/bin/python2
ln -sv /usr/local/python3/bin/python3.5 /usr/bin/python
6 修改yum腳本,使其指向舊版本的python,已避免yum無法運行
sed -i ‘s$#!/usr/bin/python$#!/usr/bin/python2.6$g‘ /usr/bin/yum
7 測試
輸入python 顯示如下
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Centos6.5中實現python2與python3的並存