cd /usr/local/src

wget http://mirrors.sohu.com/python/3.6.4/Python-3.6.4.tgz

yum -y install zlib*  python-devel mysql-devel zlib-devel openssl-devel

tar xf Python-3.6.4.tgz

cd Python-3.6.4/

./configure   --enable-shared --enable-loadable-sqlite-extensions --with-zlib 

./configure --enable-optimizations

make

make install

rm -rf /usr/bin/python

ln -s /usr/local/bin/python3.6    /usr/bin/python

sed  -i    's/\#\!\/usr\/bin\/python/\#\!\/usr\/bin\/python2/'   /usr/bin/yum

sed  -i    's/\#\! \/usr\/bin\/python/\#\! \/usr\/bin\/python2/'   /usr/libexec/urlgrabber-ext-down

echo  "/usr/local/lib"  >> /etc/ld.so.conf

/sbin/ldconfig

mkdir -p  /root/.pip/

cat >  /root/.pip/pip.conf   <<EOF

[global]

index-url = http://pypi.douban.com/simple

trusted-host = pypi.douban.com

EOF

python -V