idantepper commented on code in PR #39151: URL: https://github.com/apache/airflow/pull/39151#discussion_r1575341888
########## airflow/providers/amazon/aws/operators/s3.py: ########## @@ -503,23 +509,37 @@ def __init__( self.bucket = bucket self.keys = keys self.prefix = prefix + self.from_datetime = from_datetime + self.to_datetime = to_datetime self.aws_conn_id = aws_conn_id self.verify = verify self._keys: str | list[str] = "" - if not exactly_one(prefix is None, keys is None): - raise AirflowException("Either keys or prefix should be set.") + if not exactly_one(keys is None, all([prefix is None, from_datetime is None, to_datetime is None])): + raise AirflowException( + "Either keys or at least one of prefix, from_datetime, to_datetime should be set." Review Comment: I agree that it will be easier to understand without the negative sections. do you suggest to add the exactlyone function to airflow helpers? The statement checks if keys are given or at least one of the other params were given. it could be only the keys or any combination that includes one of the other params about empty list or empty string they are both valid options for keys, maybe someone has this operator in a dag that gets dynamically which keys to delete but for a specific run he didn't have any keys to delete so the value of keys will be the empty list and the action that will be performed is to not delete any key -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@airflow.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org