A shell script that manages my Python virtualenv, rebuilds and re-pip-installs my code, helps me with pdb debugging and performance profiling.

pye.sh

#!/bin/bash

PYTHON=python

help() {
    echo "This is a virtualenv swiss army knife script."
    echo ""
    echo "Usage:   $0 [options]         # -S, -s, -i -c"
    echo "         $0 [options] foobar.py --arg1 --arg2"
    echo ""
    echo "-p         rebuild code and pip re-install before running python"
    echo "-P         profile the Python code as it runs (gprof2dot)"
    echo "-v DIR     specify a virtualenv directory (else use .pyerc)"
    echo "-d         run python code in a PDB session"
    echo "-S         run a bash shell in the virtualenv context"
    echo "-s SCRIPT  run a bash script in the virtualenv context"
    echo "-i         go into interactive python interpreter"
    echo "-c         run a python code one-liner"
    echo "-h,-?      show this help message"
    echo ""
    echo "The .pyerc file should set the VIRTUAL_ENV and PIP_INSTALL variables."
    echo "Example:"
    echo ""
    echo "   VIRTUAL_ENV=\"/blah/blah/blah/venv\""
    echo "   PIP_INSTALL=\"...build my_package-0.0.tar.gz...store it in python-packages... && \\"
    echo "       pip uninstall -y my_package && \\"
    echo "       pip install python-packages/my_package-0.0.tar.gz\""
}

if [ $# == 0 ]
then
    help
    exit 0
fi

if [ -f .pyerc ]
then
    source .pyerc
elif [ -f "$HOME/.pyerc" ]
then
    source "$HOME/.pyerc"
fi

setup_venv() {
    if [ -z "$venv_ready" ]
    then
        export PATH="$VIRTUAL_ENV/bin:$PATH"
        unset PYTHON_HOME
        venv_ready=1
    fi
}

while getopts "pPv:dSs:ic:h\?" opt; do
    case $opt in
    p)
        setup_venv
        (eval $PIP_INSTALL) || exit 1
        ;;
    P)
        # PYTHON="python -m cProfile -s tottime"
        PYTHON="python -m cProfile -o log.profile"
        # gprof2dot -f pstats log.profile -o callingGraph.dot
        # dot -Tpng callingGraph.dot -o graph.png
        # display graph.png
        ;;
    v)
        VIRTUAL_ENV="$OPTARG"
        ;;
    d)
        PYTHON="python -m pdb "
        ;;
    S)
        echo "Running a bash shell in the virtualenv context..."
        $PYTHON -c 'import os; os.system("/bin/bash -")'
        fini="yes"
        ;;
    s)
        setup_venv
        source "$OPTARG"
        fini="yes"
        ;;
    i)
        setup_venv
        $PYTHON
        fini="yes"
        ;;
    c)
        setup_venv
        $PYTHON -c "$OPTARG"
        fini="yes"
        ;;
    h|\?)
        help
        exit 0
        ;;
    *)
        help
        exit 1
        ;;
    esac
done
shift $(expr $OPTIND - 1)

if [ -z "$fini" ]
then
    setup_venv
    $PYTHON $@
fi