@Marvin how do I wait for a submitted task that throws and exception?

To handle a task in Prefect that throws an exception, you can use the task's state to manage and respond to exceptions. Here's a concise overview: 1. Retrying Tasks: If a task fails and has retries left, Prefect can automatically retry the task. This is managed by the

handle_retry

method, which schedules the task for retry based on configured retry delays. 2. Handling Exceptions: If a task fails and cannot be retried, the task's state is set to

Failed

. You can use the

handle_exception

method to record the exception and transition the task to a terminal state. 3. Awaiting Completion: Tasks can be awaited until they reach a terminal state (e.g.,

Completed

,

Failed

). Prefect's task engine handles state transitions and can listen for events or poll for state changes. For more detailed information, you can refer to the task engine code. Additionally, the top-level API of Prefect includes modules like

flow

,

task

, and

State

that are central to handling tasks and their states. For more on the API, you can explore Prefect's top-level API documentation. If you are using Prefect 3.x, remember that it supports handling exceptions through state management, allowing you to programmatically respond to task failures.