python

Pydantic computed_field with default value

pydantic\.errors\.PydanticUserError.*computed_field.*cannot have default

Fixes

1.Remove default value from @computed_field decorated property
2.Computed fields derive their value from the property body
3.Use a regular field with a validator if you need a default

pydanticcomputed-field

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