python

Pydantic invalid discriminator field

ValueError: \[Pydantic\] .* is not a valid discriminator

Fixes

1.Use a Literal type for the discriminator field in each variant
2.Ensure the discriminator field is required (not Optional)
3.Check that each union member has a unique literal value

pydanticdiscriminated-union

Related Errors

Asyncio event loop already running

RuntimeError: This event loop is already running

•Use nest_asyncio.apply() to allow nested event loops
•Use asyncio.run_coroutine_threadsafe() instead of asyncio.run()

Coroutine never awaited

RuntimeWarning: coroutine '.*' was never awaited

•Add 'await' before the coroutine call
•Use asyncio.create_task() to schedule the coroutine

Asyncio task was cancelled

asyncio\.CancelledError

•Handle CancelledError in try/except within the task
•Use asyncio.shield() to protect critical sections from cancellation