Updated Python 2.7.xx on an Amazon AMI + make it default (in alternatives) and symlik pip ad virtualenv for future usage

python2.7.xx.bash

#!/usr/bin/env bash

NEW_VERSION="2.7.14"


CURRENT_VERSION="$(python -V 2>&1)"
if [[ "$CURRENT_VERSION" ==  "Python $NEW_VERSION" ]]; then
    echo "Python $NEW_VERSION already installed, aborting."
else
    echo "Starting upgrade from ${CURRENT_VERSION} to ${NEW_VERSION}"

    if [ ! -d "python_update" ]; then
       mkdir python_update
       cd python_update
       wget https://www.python.org/ftp/python/$NEW_VERSION/Python-$NEW_VERSION.tgz
       tar xfz Python-$NEW_VERSION.tgz
       cd Python-$NEW_VERSION/
    else
      cd python_update
      cd Python-$NEW_VERSION/
    fi
    ./configure --enable-loadable-sqlite-extensions --prefix /usr/local/lib/python$NEW_VERSION --enable-ipv6 --enable-unicode=ucs4 --enable-shared
    make && make install

    alternatives --install /usr/bin/python python /usr/local/lib/python$NEW_VERSION/bin/python2.7 $(echo $NEW_VERSION | sed 's/\.//g')0
    update-alternatives --refresh python
    update-alternatives --auto python

    curl --silent --show-error --retry 5 https://bootstrap.pypa.io/get-pip.py | sudo python
    ln -sf /usr/local/lib/python$NEW_VERSION/bin/pip /usr/bin/pip
    pip install -U virtualenv
    ln -sf /usr/local/lib/python$NEW_VERSION/bin/virtualenv /usr/bin/virtualenv
    echo "DONE!"
fi

Like the retry for get-pip 👍