python
Pydantic v2 serialization error
pydantic.*SerializationError.*unable to serialize
Fixes
- 1.Add custom serializer with @field_serializer decorator
- 2.Use model_config = ConfigDict(arbitrary_types_allowed=True)
- 3.Implement __get_pydantic_core_schema__ for custom types
pydanticserialization
Related Errors
python3 fixes
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()
python3 fixes
Coroutine never awaited
RuntimeWarning: coroutine '.*' was never awaited
- •Add 'await' before the coroutine call
- •Use asyncio.create_task() to schedule the coroutine
python3 fixes
Asyncio task was cancelled
asyncio\.CancelledError
- •Handle CancelledError in try/except within the task
- •Use asyncio.shield() to protect critical sections from cancellation