I'm trying to connect with psycopg: v3.1.12 to PostgreSQL and set the Isolation Level to 1. I've tried adding the set_isolation_level(1) found in the official Docs in both the connection and the transaction set up but it doesn't work for me. Any help would be appreciated. My connection : self.pg_connection = psycopg.connect( ( "dbname=" + os.environ["PG_DB"] + " user=" + os.environ["PG_USER"] + " password=" + os.environ["PG_PASS"] + " host=" + os.environ["PG_HOST"] + " port=" + os.environ["PG_PORT"] ), row_factory=dict_row, autocommit=False, ) My Transaction : with self.pg_connection.transaction() as tx: tx.set_isolation_level(1) The above returns the exception : Exception: 'Transaction' object has no attribute 'set_isolation_level' Continue reading...