def user_exists(self, username):
        return bool(self._execute("psql -tAc \"SELECT 1 FROM pg_roles WHERE rolname='%s'\"" % username, stdout=False))
Return the status for a service, pass a signature to use to find
dataset/ETHPy150Open python-provy/provy/provy/more/base/database/postgresql.py/BasePostgreSQLRole.user_exists--crossover with--dataset/ETHPy150Open saltstack/salt/salt/modules/debian_service.py/status