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! Is there an easy way to make a task the last or first task of a flow explicitly?

Hi <@U0136E9NX9Q>!

Check out: <https://docs.prefect.io/api/latest/core/task.html#task-2> and the `set_dependencies` method

You can explicitly set upstream and downstream deps for a given task

I don’t think we have an idiom for saying “this is the first task”

Let me know if I can expand or help further

Alright, just wanted to make that sure. Thanks!

If you wanted to make ABSOLUTELY sure, you could do something like:
```all_other_tasks = flow.tasks.difference([t])
t.set_dependencies(upstream_tasks=all_other_tasks, flow=flow)```
This would make `t` a downstream task of every other task, ensuring it runs last

I even got it less messy by using tags and the `get_tasks()`