advanced patterns When Using asyncio.gather with Custom handling Handling in Python 3.10
I need help solving I'm working on a personal project and Hey everyone, I'm running into an issue that's driving me crazy..... I'm working with an scenario with exception handling while using `asyncio.gather` in my Python application. I have multiple asynchronous tasks that I want to run concurrently, and I need to handle exceptions from these tasks individually. However, I am working with a situation where the first exception raised is being propagated, and I'm unable to handle subsequent exceptions as intended. Here’s a simplified version of my code: ```python import asyncio async def task_with_error(task_id): if task_id == 1: raise ValueError('behavior in task 1') await asyncio.sleep(1) return f'Task {task_id} completed successfully' async def main(): tasks = [task_with_error(1), task_with_error(2), task_with_error(3)] results = await asyncio.gather(*tasks, return_exceptions=True) print(results) asyncio.run(main()) ``` In this example, I expect that the exceptions will be returned as part of the `results` list due to `return_exceptions=True`. However, when I run this, I get the following output: ``` ['behavior in task 1', 'Task 2 completed successfully', 'Task 3 completed successfully'] ``` This behavior is not what I expect since I'm only seeing the first behavior in the result. I would like to get feedback for each task regardless of whether it raises an exception or not. I've tried using `try...except` blocks within the individual tasks, but that doesn't seem to be providing the desired outcome either. I want to ensure that even if one task fails, I still see the results of the other successful tasks. How can I modify my approach to ensure that I can catch exceptions independently for each task while still using `asyncio.gather`? Am I using `asyncio.gather` incorrectly, or is there a better practice for handling these cases? I'm working with Python 3.10 and have verified that my version of asyncio is up to date. What am I doing wrong? This is part of a larger application I'm building. Any help would be greatly appreciated! Hoping someone can shed some light on this. Is there a better approach?