Based on my research and the issue you're experiencing, I can help you fix the

allow_failure

usage with async functions. Here's the correct way to use it:

python
from prefect import flow, task
from prefect.utilities.annotations import allow_failure

@task
async def test(x):
    if x != 2:
        raise Exception("not two")
    return x

@flow
async def my_flow():
    # Option 1: Allow failure on the entire task execution
    result = await allow_failure(test(x=1))
    print(f"Result with failure: {result}")  # This will continue even if test fails
    
    # Option 2: If you need to use submit
    future = await test.submit(x=1)
    result = await allow_failure(future.result())
    print(f"Result with failure using submit: {result}")

The key points to understand: 1. The

allow_failure

should wrap the entire operation you want to allow to fail 2. When using

.submit()

, apply

allow_failure

to the

.result()

call 3. Don't chain multiple operations inside the

allow_failure

call 4. Make sure to

await

the async operations properly Your original code had a few issues:

python
allow_failure(
    test
    .with_options(task_run_name=some_name)
    .submit(x=x)
    .result())  # This chains too many operations inside allow_failure

Instead, you should structure it like this:

python
@flow
async def my_flow():
    future = await test.with_options(task_run_name="my_task").submit(x=x)
    result = await allow_failure(future.result())

This way: - The task will execute - If it fails, the failure will be contained - The flow will continue executing - You can check the result state to handle the failure case if needed Remember that

allow_failure

will: - Return

None

if the operation fails - Return the actual result if the operation succeeds - Prevent the failure from propagating up and failing the entire flow Would you like me to provide any additional examples or clarify any part of this explanation?