Hi. I'm new to Prefect and having some trouble understanding the concept of tasks and task runs. I'm trying to return data from a task, but attempting to print the results of the task only prints out

<Task: fetch_data>

. This is what I'm trying to do:

@task

def fetch_data():

return {"data": "random data"}

with Flow('Get-Data') as flow:

flow.run_config = LocalRun()

data = fetch_data()

<http://logger.info|logger.info>(data)

flow.run()

Hey @Carlos Cueto, This is because

<http://logger.info|logger.info>

is logging during the flow build time, not during runtime. Also, your run_config should be outisde the flow

with Flow('Get-Data') as flow:
    
    data = fetch_data()
    <http://logger.info|logger.info>(data)

flow.run_config = LocalRun()

So the

with Flow()

builds the DAG and the logger is running during buildtime

Thank you Kevin. I'm still a little confused. I think I understand your point. Can you advise how to print the results of

fetch_data

during flow runtime and not build time? Would I be forced to call the

<http://logger.info|logger.info>()

inside a

@task

decorated function? In addition, do you mind explaining the difference between run_config inside the flow vs outside the flow context?

Yes exactly use the logger inside the task