upgrade Python 2.7.6 -> 2.7.9 on Ubuntu 14.04

build-python-2.7.9.sh

#!/bin/sh
#
# Installs Python 2.7.9 on Ubuntu 14.04 to include security updates
# Run this script with superuser privileges.
#

BASEDEPS="build-essential python-pip"
BUILDDEPS="libbz2-dev \
libc6-dev \
libgdbm-dev \
libncursesw5-dev \
libreadline-gplv2-dev \
libsqlite3-dev \
libssl-dev \
tk-dev"

TARFILE="Python-2.7.9.tgz"
TARHOST="https://www.python.org/ftp/python/2.7.9"
SRCDIR="Python-2.7.9"

apt-get update
apt-get install -y $BASEDEPS $BUILDDEPS

if [ ! -e $SRCDIR ]; then
	wget "$TARHOST/$TARFILE"
	tar xvf $TARFILE
fi

cd $SRCDIR
./configure
make
make install

cd ..
python -m ensurepip --upgrade

echo "removing source files"
rm $TARFILE
rm -r $SRCDIR