Python 3.6.2 source install

apt-get install -y make build-essential libssl-dev zlib1g-dev   
apt-get install -y libbz2-dev libreadline-dev libsqlite3-dev llvm 
# apt-get install -y libncurses5-dev  libncursesw5-dev xz-utils tk-dev
wget https://www.python.org/ftp/python/3.6.2/Python-3.6.2.tar.xz
tar xf Python-3.6.1.tgz
cd Python-3.6.1
./configure --enable-optimizations
make -j8
make altinstall
ln -s /usr/local/bin/python3.6 /usr/local/bin/python3