bashrc: absdir and setenv functions

.bashrc

function absdir() {
    for i; do
	python -c "import os; print os.path.abspath('$i')"
    done
}

function setenv() {
    for env ; do
	if [ -d "${env}" ]; then
	    env=$(absdir "$env")
	    for i in \
		PATH:bin \
		MANPATH:man \
		INFOPATH:info \
		LIBRARY_PATH:lib \
		LD_LIBRARY_PATH:lib \
		PYTHONPATH:lib/python2.7/site-packages
	    do
		var=${i%:*}
		dir="${env}/${i#*:}"
		[ -d "${dir}" ] && eval export $var=\"${dir}:\${${var}}\"
	    done
	fi
    done
}