Install Python 3.7 on Raspbian Stretch

install-python-3.7.sh

sudo apt-get install screen

screen

PACKAGES=(
  "build-essential"
  "libbz2-dev"
  "libdb5.3-dev"
  "libexpat1-dev"
  "libffi-dev"
  "libgdbm-dev"
  "liblzma-dev"
  "libncurses5-dev"
  "libreadline-dev"
  "libsqlite3-dev"
  "libssl-dev"
  "tk-dev"
  "uuid-dev"
  "zlib1g-dev"
)

unset INSTALL_SET

for P in "${PACKAGES[@]}"; do
  INSTALL_SET="$INSTALL_SET $P"
done

sudo apt-get update
sudo apt-get install $INSTALL_SET

mkdir -p /apps
chown pi /apps /usr/local/src
cd /usr/local/src

VERSION=3.7.4
MAJOR=${VERSION:0:3}

curl -O https://www.python.org/ftp/python/$VERSION/Python-$VERSION.tar.xz

tar xvf Python-$VERSION.tar.xz
cd Python-$VERSION
./configure --prefix=/apps/python-$VERSION --enable-optimizations
make
make install

ln -nsf /apps/python-$VERSION /apps/python-$MAJOR

/apps/python-$MAJOR/bin/python3 -V

PATH=/apps/python-$MAJOR/bin:$PATH

python3 -V

• ctrl-a, ctrl-d to detach from the screen session.
• screen -list to list the existing sessions.
• screen -r to re-attach to an existing session.