Install Python 2.x and 3.x with enable-shared

install_pythons.sh

#!/bin/bash

### Python
# Setup python from source, for multiple versions of it. This only works with whole version numbers, not alpha releases.
# CentOS requires these packages:
#       sudo yum -y install gcc automake autoconf
#       yum groupinstall -y "Development tools"
#       yum install -y zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline
#       yum install -y tar
#       sudo yum -y install readline-devel ncurses-devel openssl-devel sqlite-devel tk-devel gdbm-devel bzip2-devel
# Ubuntu requires:
#       sudo apt-get install libreadline-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev

# Some people will prefer this to be /usr/local or /var/local, or whatever.
PREFIX=/opt

cd /tmp
for VERSION in 2.7.9 3.5.1
do
        wget https://www.python.org/ftp/python/$VERSION/Python-$VERSION.tgz
        tar zxvf Python-$VERSION.tgz
        cd Python-$VERSION
        ./configure --with-signal-module --with-threads --prefix=${PREFIX}/python-$VERSION --enable-shared LDFLAGS="-Wl,-rpath /usr/local/lib"
        make -j 8 && \
        sudo make altinstall && \
        if [ ${VERSION:0:1} = "2" ]; then
                echo "/opt/python-$VERSION/lib" >> /etc/ld.so.conf
                ldconfig
                curl https://bootstrap.pypa.io/get-pip.py | sudo ${PREFIX}/python-$VERSION/bin/python${VERSION:0:1}
                # (Optional)
                sudo ${PREFIX}/python-$VERSION/bin/pip install supervisor
        elif [ ${VERSION:0:1} = "3" ]; then
                echo "/opt/python-$VERSION/lib" >> /etc/ld.so.conf
                ldconfig
        fi
        sudo ${PREFIX}/python-$VERSION/bin/pip${VERSION:0:1} install virtualenv
done