123	123yum groupinstall 'Development tools'yum install yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-develreadline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel	123	yum groupinstall 'Development tools'yum install yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-develreadline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel
123	yum groupinstall 'Development tools'yum install yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-develreadline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel

2. 下载安装包

1	12wget https://www.python.org/ftp/python/3.5.0/Python-3.5.0.tgz	12	wget https://www.python.org/ftp/python/3.5.0/Python-3.5.0.tgz
12	wget https://www.python.org/ftp/python/3.5.0/Python-3.5.0.tgz

3. 编译

12345	12345tar xf Python-3.5.0.tgzcd Python-3.5.0 ./configure --prefix=/usr/local/python3 make make install	12345	tar xf Python-3.5.0.tgzcd Python-3.5.0 ./configure --prefix=/usr/local/python3 make make install
12345	tar xf Python-3.5.0.tgzcd Python-3.5.0 ./configure --prefix=/usr/local/python3 make make install

4. 设置环境变量

1	1echo 'export PATH=#PATH:/usr/local/python3/bin' >> ~/.bashrc	1	echo 'export PATH=#PATH:/usr/local/python3/bin' >> ~/.bashrc
1	echo 'export PATH=#PATH:/usr/local/python3/bin' >> ~/.bashrc

5. 替换python2

12	12rm /usr/bin/pythonln -sv /usr/local/bin/python3.5 /usr/bin/python	12	rm /usr/bin/pythonln -sv /usr/local/bin/python3.5 /usr/bin/python
12	rm /usr/bin/pythonln -sv /usr/local/bin/python3.5 /usr/bin/python

(这样做的目的是在系统任意目录下敲入python调用的都是python3.5的命令，而非系统默认的2.6.6。但是这样会导致依赖python2.6的yum不能使用因此还要修改yum配置)

6. 更新yum配置

1	1ll /usr/bin \| grep python	1	ll /usr/bin \| grep python
1	ll /usr/bin \| grep python

(这里的/usr/bin目录下面包含以下几个文件的（ll | grep python），其中有个python2.6，只需要指定yum配置的python指向这里)

1	12 vim /usr/bin/yum	12	vim /usr/bin/yum
12	vim /usr/bin/yum

通过vim修改yum配置，#!/usr/bin/python改为#!/usr/bin/python2.6,保存退出，完成python3的安装

7.运行python

安装Python3.5