.bashrc_python

#!/usr/bin/env bash
# BCAD virtualenv activation script.
# use a default virtualenv location if none are specified,
# and also will source a ".bashrc_pypath" file to setup PYTHONPATH
# if it exists.

# set BCAD_PY_ROOT value if not defined
if [ -z "${BCAD_PY_ROOT}" ]; then
    export BCAD_PY_ROOT="/tools/bag3/pyusr"
fi

# check that BCAD_PY_ROOT is a valid Python installation
PYTHON_BIN="${BCAD_PY_ROOT}/bin/python"
if ! [ -x "${PYTHON_BIN}" ]; then
    echo "[ERROR] ${PYTHON_BIN} is not a valid python executable." >&2
    exit 1
fi

# update PATH and Python related variables
export PATH="${BCAD_PY_ROOT}/bin:${PATH}"
unset PYTHONHOME
PYPATH_FILE=".bashrc_pypath"
if [ -f "${PYPATH_FILE}" ]; then
    source "${PYPATH_FILE}"
fi

# This should detect bash and zsh, which have a hash command that must
# be called to get it to forget past commands.  Without forgetting
# past commands the $PATH changes we made may not be respected
if [ -n "${BASH:-}" -o -n "${ZSH_VERSION:-}" ] ; then
    hash -r 2> /dev/null
fi