def _keep_alive(self, n_pending_tasks, n_unique_pending):
        if not self._config.keep_alive:
            return False
        elif self._assistant:
            return True
        else:
            return n_pending_tasks and (n_unique_pending or not self._config.count_uniques)
Create a package finder appropriate to this list command.
dataset/ETHPy150Open spotify/luigi/luigi/worker.py/Worker._keep_alive--crossover with--dataset/ETHPy150Open balanced/status.balancedpayments.com/venv/lib/python2.7/site-packages/pip-1.3.1-py2.7.egg/pip/commands/list.py/ListCommand._build_package_finder