Bring your towel and join one of the fastest growing data communities. Welcome to our second-generation open source orchestration platform, a completely rethought approach to dataflow automation.

Prefect Community

Hi, can I trust the order of mapped tasks? As in if I have a list `l1 = [a, b, c]` and I generate `l2 = task_name.map(l1)`, can I trust that element 0 in `l2` derives from element 0 from `l1`?

Yes order is guaranteed which is why you can’t map over sets. There should be no problem as long as the list lengths are the same throughout the map calls