Is there a Prefect cloud/UI equivalent of this? https://docs.prefect.io/core/idioms/flow-to-flow.html

Not sure what you mean on the Prefect Cloud. If you mean like a drag and drop, kind of, but using Python will be a lot easier. On standard plan and up, there are automations that have actions that get performed when a Flow changes state. So it would be a matter of saying when Flow A finishes, trigger Flow B. But I don’t think that’s good because if you have subflows, it kills the reusability of just running Flow A independently. Using the Python script in that docs page will be much better. Note those Flows need to be registered beforehand to use them with

create_flow_run

UI-based Flow builders are in considering for Prefect 2.0 though.

Let's say that right now I have Flow A scheduled to run at 2PM, then Flow B at 230 and Flow C at 3PM. Each is dependent on the other. I would then create a flow of flows document and upload it to the same project folder, right? Can I set them to run "ahead" of schedule, provided the upstream flow finishes in time?

In this case I would use a “Main Flow”. If Flow A, B and C are registered already. You can do:

with Flow(...) as flow:
    a = create_flow_run(project_name="...",flow_name="Flow_A",scheduled_start_time="...")
    a_wait = wait_for_flow_run(a)
    b = create_flow_run(project_name="...",flow_name="Flow_B",scheduled_start_time="...", upstream_tasks[a_wait])
    b_wait = wait_for_flow_run(b)

On the above, is that identical to the flow of flows in the documentation? Or are you saying to add that to the Last flow?

Pretty identical except I added the scheduled_start_time so that you can run them at 2 pm, 2:30 pm, and 3 pm. But if that’s not important, then take out the scheduled start time and run chain the dependencies and they’ll run one after another. These flows won’t need schedules then, you can just schedule the main flow

So if I am in prefect cloud, I would see all the flows but only one (1) with a schedule turned on, that one being the primary flow. But they would all still run daily or however I specified it in the "flow of flows"

Yes exactly. If “Main Flow” runs everyday at 2 pm, Flow A, B, and C will still run daily even with no scheduled because Main Flow kicks off their runs

and any cloud hooks i had configured to show success/failure on the "child" flows or whatever would still run

Yeah exactly because they are on the Flow level. So A, B, and C can even have different Docker images or RunConfigs. 🙂

That's tremendous, thank you!

You can change the task name in the Flow block like this:

@task(name = "abc")
def abc(x):
    return x + 1

with Flow(..) as flow:
    abc(1, task_args={"name":"bcd})

Lovely, thank you