echo "---------------1.download python2.7 package-----------------------"

cd /tmp

file_name="Python-2.7.12.tgz"

wget https://www.python.org/ftp/python/2.7.12/Python-2.7.12.tgz

echo "--------------------2.build and install---------------------------"

cd Python-2.7.12

./configure

make all

make install

make clean

make distclean

echo "----------------------3.python version---------------------------"

/usr/local/bin/python2.7 -V

echo "----------------------4.modify link------------------------------"

mv /usr/bin/python /usr/bin/python2.6.6

ln -s /usr/local/bin/python2.7 /usr/bin/python

echo "---------------------5.python new version------------------------"

python -V

echo "--------------------6.modify yum config--------------------------"

sed '1/\!\/usr\/bin\/python/\!\/usr\/bin\/python2.6/g' /usr/bin/yum

echo "----------------------success------------------------------------"