@Marvin How do I retrieve the parent flow run id in a child task?

To retrieve the parent flow run ID in a child task using Prefect 3.x, you can access the

flow_run_id

from the task's context. Here’s a concise way to do it: 1. Import the necessary context functions from Prefect. 2. Use the context to access the

flow_run_id

. Here's a simple example:

python
from prefect import task
from prefect.context import FlowRunContext

@task
def get_parent_flow_run_id():
    flow_run_context = FlowRunContext.get()
    if flow_run_context:
        parent_flow_run_id = flow_run_context.flow_run.id
        print(f"Parent Flow Run ID: {parent_flow_run_id}")
    else:
        print("No flow run context available")

In this example,

FlowRunContext.get()

is used to access the flow run context, and from there, you can retrieve the

flow_run.id

. For more details, you can explore the documentation: - Prefect 3.x Task Run Limits - Prefect 3.x Write Flows If you have any further questions or need more specific guidance, feel free to ask.