python

NumPy singular matrix in linear algebra

numpy\.linalg\.LinAlgError: Singular matrix

Fixes

1.Use np.linalg.pinv() (pseudo-inverse) instead of np.linalg.inv()
2.Add regularization: matrix + eps * np.eye(n)
3.Check matrix condition number with np.linalg.cond()

numpylinear-algebra

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