Hi I have a a`Flow` with a an `ifelse` the `False` branch is

Question

Hi I have a a`Flow` with a an `ifelse` the `False` branch is a `pass` `calced def df = calced def df copy ` Is that the right way to implement this logic I am getting a `UserWarning You are making a copy of a task that has dependencies on or to other tasks in the active flow context The copy will not retain those dependencies ` ` You are making a copy of a task that has dependencies on or to other tasks `

Jeremiah · Answer

Hi Itay that warning is to let you know that the task you are copying has already been used elsewhere in your flow and making sure you re aware that even though you re copying it none of the tasks it was previously connected to are also being copied

Jeremiah · Answer

If that s ok with you you can disregard the message

itay livni · Answer

Ok Thanks it makes sense Is copy `df` the right way to mimic a pass in an `ifelse `

itay livni · Answer

< Chris White> is there a good pattern for ifelse pass

Chris White · Answer

Hey itay so are you trying to implement If some condition is true run task A else if it s False skip task A

itay livni · Answer

yes

Chris White · Answer

Gotcha in that case it might be simpler to raise a skip signal either in the upstream task that is returning the condition or in the task you want to skip you could pass the output of the condition to the downstream and raise conditional on its value

itay livni · Answer

Do you have a simple example you can point me to

Chris White · Answer

Yup give me a few min I ll cook something up

itay livni · Answer

cool I think it would be good to have in the documentation

Chris White · Answer

So similar to this example but with a SKIP signal instead of RETRY <https docs prefect io core concepts execution html state signals>

Chris White · Answer

for example

Chris White · Answer

``` task def upstream conditional task do stuff if some value is False raise signals SKIP Skip this task and any downstream tasks ```

Chris White · Answer

similarly you could return from the conditional task and perform this check in the downstream `calced def df` task and raise the signal there

itay livni · Answer

ok Thanks diesting

itay livni · Answer

digesting