if [[ -z ${BASH_SOURCE[0]:-} ]]
then
  echo "BASH_SOURCE is not set, unsupported shell" >&2
  return 2
fi
export UPT_HOME="$(readlink -f "$(dirname "${BASH_SOURCE[0]}")")"
export PATH="$UPT_HOME/bin${PATH:+:${PATH}}"
export PYTHONPATH="$UPT_HOME/python3${PYTHONPATH:+:${PYTHONPATH}}"