python virtualenv for the lazy

ve.sh

#!/bin/bash -e

if [ "${BASH_SOURCE[0]}" == "${0}" ]; then
    echo "source this!"
    exit 1
fi

if [ ! "$1" ]; then
    echo "Name an environment!"
    return 2
fi

ve_root="$HOME/.virtualenvs"
mkdir -p $ve_root
pushd $ve_root
export VE="$ve_root/$1"
if [ ! -d "$1" ]; then
    virtualenv $1
else
    echo "Existing virtualenv found."
fi
echo "Virtualenv path stored into shell env var 'VE'"
source $1/bin/activate
popd