linux python升级及全局环境变量设置

1、下载python

wget https://www.python.org/ftp/python/3.4.5/Python-3.4.5.tgz

或者去官网下载压缩包

2、安装python3依赖

yum install openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel

3、解压安装

tar -xzvf Python-3.4.5.tgz

./configure –prefix=/usr/local/Python3

make

make install

4、老版本py2备份

mv /usr/bin/python /usr/bin/python_old

5、设全局变量

ln -s /usr/local/Python3/bin/python3 /usr/bin/python

6、修改yum解释器或升级yum

vi /usr/bin/yum

将第一行#!/usr/bin/python改为

#!/usr/bin/python2.7

转载于:https://www.cnblogs.com/zhylioooo/p/10911023.html