'Returns verticaql connection object'

def get_conn(self):

    conn = self.get_connection(self.vertica_conn_id)
    conn_config = {'user': conn.login, 'password': (conn.password or ''), 'database': conn.schema}
    conn_config['host'] = (conn.host or 'localhost')
    if (not conn.port):
        conn_config['port'] = 5433
    else:
        conn_config['port'] = int(conn.port)
    conn = connect(**conn_config)
    return conn
