备用命令：
yum groupinstall "Development tools"
yum install zlib-devel
yum install bzip2-devel
yum install openssl-devel
yum install ncurses-devel
yum install sqlite-devel


cd /opt
wget --no-check-certificate https://www.python.org/ftp/python/2.7.9/Python-2.7.9.tar.xz
tar xf Python-2.7.9.tar.xz
cd Python-2.7.9

yum install readline-devel
yum install gdbm-devel.i686
yum install tcl-devel.x86_64
yum install gdbm-devel.x86_64


 ./configure --prefix=/usr/local --with-dbmliborder=gdbm:bdb 
 make
 make install
 mv /usr/bin/python /usr/bin/python.old
 ln -s /opt/Python-2.7.9/python /usr/bin/python
 
 Done!