yum -y install python-devel openssl openssl-devel gcc sqlite-devel

wget http://www.python.org/ftp/python/2.7.5/Python-2.7.5.tar.bz2
tar -xvjf Python-2.7.5.tar.bz2
cd Python-2.7.5
./configure --prefix=/usr/local/python2.7 --with-threads --enable-shared
make
make install altinstall

ln -s /usr/local/python2.7/lib/libpython2.7.so /usr/lib
ln -s /usr/local/python2.7/lib/libpython2.7.so.1.0 /usr/lib
ln -s /usr/local/python2.7/bin/python2.7 /usr/local/bin
/sbin/ldconfig -v

然后测试得到正确的python
/usr/local/python2.7/bin/python2.7 -V