yum  -y  install  bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel  libffi-devel  tk-devel gcc gcc-c++ openssl  openssl-devel

wget https://www.python.org/ftp/python/3.6.8/Python-3.6.8.tar.xz

tar xf Python-3.6.8.tar.xz

cd Python-3.6.8/

mkdir /usr/local/python3

./configure --prefix=/usr/local/python3

make -j8

make -j8 install

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

ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3

python3 -V