由于没有找到Python3.5的rpm安装包，因此进行源代码编译安装
1、下载Python3.5.2
[root@seastar ~]# cd /usr/local/src
[root@seastar src]#wget wget https://www.python.org/ftp/python/3.5.2/Python-3.5.2.tgz
2、查看安装步骤
[root@seastar src]# tar -zxvf Python-3.5.2.tgz
[root@seastar src]# cd Python-3.5.2
[root@seastar Python3.5.2]# cat README | more
On Unix, Linux, BSD, OSX, and Cygwin:
./configure
make
make test
sudo make install
3、安装
[root@seastar src]# ./configure --prerix=/usr/local/python3
...
3、编译
[root@seastar src]# make
...
Python build successfully!
The necessary bits to build these optional modules is not found:
_bz2 _curses _curses_panel
_dbm _gdbm _lzma
_sqlite3 _ssl _tkinter
readlime zlib
安装这些可选的开发库（这里忽略了lzma和tkinter）
[root@seastar src]# yum install -y bzip2-devel ncurses-devel gdbm-devel openssl-devel readline-devel zlib-devel sqlite-devel
3、安装
[root@seastar src]# make install
...
4、至此，安装成功