How can I fail a task I am try catching exceptions which wor

Question

How can I fail a task I am try catching exceptions which works file but I still want the task to fail The docs didn t quite show this example ``` task def fail task return Failed flow def fail flow i hope fail task fail flow i hope 11 42 32 292 | DEBUG | Task run always fail task d83fd752 0 Beginning execution 11 42 32 302 | INFO | Task run always fail task d83fd752 0 Finished in state Completed 11 42 32 313 | INFO | Flow run ludicrous lemur Finished in state Completed All states completed ``` I d like a task to fail and then do retries or not but end the steps in the flow with the flow also failed

Mason Menges · Answer

In most cases like this it would make more sense to raise an exception within the task in scenarios where you want it to fail ``` task def fail task you could really raise any exception here raise ValueError flow def fail flow i hope fail task fail flow i hope ```

merlin · Answer

So I can only fail a task by raising an exception Its seems like my try catch components aren t really needed in that case

merlin · Answer

I was using <https docs prefect io concepts states return prefect state|the Prefect 2 0 docs on States>

merlin · Answer

Oh maybe I have it now The following still raises a prefect exception ``` task def fail task try service call etc except CustomException return Failed flow def fail flow i hope fail task return state=True fail flow i hope 14 16 16 942 | DEBUG | Task run fail task d8c73196 0 Beginning execution 14 16 16 952 | ERROR | Task run fail task d8c73196 0 Finished in state Failed Traceback most recent call last etc raise await get state exception state prefect exceptions FailedRun None