linux python更新及全局環境變量設定

1、下載下傳python

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

或者去官網下載下傳壓縮包

2、安裝python3依賴

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

3、解壓安裝

tar -xzvf Python-3.4.5.tgz

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

make

make install

4、老版本py2備份

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

5、設全局變量

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

6、修改yum解釋器或更新yum

vi /usr/bin/yum

将第一行#!/usr/bin/python改為

#!/usr/bin/python2.7

轉載于:https://www.cnblogs.com/zhylioooo/p/10911023.html