centos下python2.6升级到python3.5

[root@tiejiang ~]# yum install gcc gcc-c++ zlib-devel -y

1、下载python3.5软件包

[root@tiejiang src]# wget https://www.python.org/ftp/python/3.5.0/Python-3.5.0.tgz

[root@tiejiang src]# tar zxvf Python-3.5.0.tgz

[root@tiejiang src]# cd Python-3.5.0

[root@tiejiang Python-3.5.0]# ./configure --prefix=/usr/local/python3.5

[root@tiejiang Python-3.5.0]# make && make install

2、下载并安装setuptools 18.5

[root@tiejiang src]# wget https://bootstrap.pypa.io/ez_setup.py -O - | python

3、备份原有python命令执行文件

[root@tiejiang src]# mv /usr/bin/python /usr/bin/pythonbak

4、创建新python软连接

[root@tiejiang src]# ln -s /usr/local/python3.5/bin/python3.5 /usr/bin/python

5、查看python版本

[root@tiejiang src]# python

Python 3.5.0 (default, Feb 29 2016, 07:06:06)

[GCC 4.4.7 20120313 (Red Hat 4.4.7-17)] on linux

Type "help", "copyright", "credits" or "license" for more information.

>>>

6、修改yum配置文件

[root@tiejiang ~]# vim /usr/bin/yum

#!/usr/bin/python

改为

#!/usr/bin/python2.6