@Marvin I am looking to access results from a flow that ran in the past. Would you provide an example on how to achieve it maybe using

get_task_run_result

?

To access results from a flow that ran in the past in Prefect 2.0, you would typically retrieve a result from a task run within that flow. According to the documentation, you can use the

.result()

method for this purpose. Here's an example of how you might get the result of a task within a flow:

python
from prefect import flow, task

@task
def my_task():
    return 42

@flow
def my_flow():
    future = my_task.submit()  # Submitting the task for execution
    result = future.result()   # Getting the result of the task
    print(result)              # Printing the task result

my_flow()

The

.result()

method will wait for the task to complete before returning the result to the caller. If the task run fails,

.result()

will raise the task run's exception. Note that the documentation excerpt I found does not specifically mention

get_task_run_result

, but talks about

.result()

which is a method available on futures in Prefect 2.0. It's also worth noting that in a real-world scenario, you'll often have task run IDs or flow run IDs that you would use to retrieve the results programmatically for tasks that completed in the past. These IDs can be used with the Prefect API or Prefect Client to fetch the result of specific task runs. If you need concrete examples of using

get_task_run_result

with task or flow run IDs, please let me know, and I can provide additional information or check for updates in the documentation or GitHub issues.

@Marvin would be great to get examples with task or flow run ID

The current documentation excerpts do not provide a direct example using

get_task_run_result

with a task or flow run ID in Prefect 2.0. However, generally speaking, to obtain the results of a task run using its run ID, you would interact with the Prefect API or the Prefect client, specifying the particular run IDs for the task or flow. Below is a more generic example that you might follow to get a task run result using the Prefect client in Prefect 2.0, assuming that

get_task_run_result

is an available method or function in this version (please note you may need to modify the code to suit the exact method and version):

python
from prefect import Client

# Initialize the Prefect Client
client = Client()

# Suppose you have a task_run_id that you obtained from a previous flow run
task_run_id = 'your-task-run-id-here'

# Obtain the task run result using the Client and task run ID
task_run_result = client.get_task_run_result(task_run_id=task_run_id)

print(task_run_result)

In this hypothetical example, you would replace

'your-task-run-id-here'

with the actual ID of the task run you're interested in. Since documentation and code could have been updated since my last training data in April 2023, it's possible that the actual implementation details or even the function names could have changed. To get the most accurate and up-to-date information, I recommend consulting the latest Prefect documentation or community resources. If

get_task_run_result

is indeed part of the Prefect 2.0 API, the specifics would be outlined in the relevant API documentation or provided by the Prefect 2.0 client library documentation. If you need further assistance, I can look up more details or any updates on GitHub if needed.