python

Alembic target database not up to date

alembic\.util\.exc\.CommandError.*Target database is not up to date

Fixes

1.Run 'alembic upgrade head' before generating new migration
2.Use 'alembic stamp head' to mark current state if manually migrated
3.Run 'alembic history' to see pending migrations

sqlalchemyalembicmigration

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