List Python versions and packages installed in all virtualenvs under a directory

list_venvs.sh

#!/usr/bin/env bash

: <<'END'
Sample Run: ./list_venvs.sh /Users/talwai/

Sample Output:
-----------------------
DIRECTORY:	/Users/talwai/qorpus_env 
PYTHON_VERSION: 	         3.3.2 
PACKAGES: 
PyYAML==3.11
amqp==1.4.5
anyjson==0.3.3
beautifulsoup4==4.3.2
billiard==3.3.0.17
celery==3.1.11
kombu==3.0.16
lxml==3.3.5
pymongo==2.7.1
python-docx==0.5.1
pytz==2014.2
redis==2.9.1
selenium==2.42.0 
-----------------------
DIRECTORY:	/Users/talwai/rapcountr_api_env 
PYTHON_VERSION: 	         3.3.2 
PACKAGES: 
Django==1.6.5
django-cors-headers==0.12
pymongo==2.7.1 
-----------------------
...etc 
END

DEFAULT_DIR=$(pwd)
WORKING_DIR=${1:-$DEFAULT_DIR}

FILES=`find $WORKING_DIR -name .Python`

printf '%s\n' '-----------------------'
for f in $FILES
do
    cd `dirname $f`
    printf "DIRECTORY:\t$(pwd) \n"
    source bin/activate
    printf "PYTHON_VERSION: \t \
        $(python -c 'import sys; print(".".join(map(str, sys.version_info[:3])))') \n"
    printf "PACKAGES: \n$(pip freeze) \n"
    deactivate
    cd - > /dev/null
    printf '%s\n' '-----------------------'
done