Python exception
Python exception: asyncio.CancelledError
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asyncio.CancelledError - Kind
- Exception
- Where you meet it
- Raised in your own program
What does asyncio.CancelledError mean in Python?
The operation has been cancelled. It can be caught to do custom work when a task is cancelled, and the documentation says that in almost all situations it must be raised again. Since Python 3.8 it is a subclass of BaseException.
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What it means in trading API work
A task in your program was cancelled: by your own code, by a timeout wrapper or at shutdown. It is not an error from the broker. A task cancelled part way through an order request leaves the outcome unknown.
This part is this site's own explanation, written for people learning to call a trading API. It is not part of the source cited above and it describes no particular broker.
What should I do about asyncio.CancelledError?
Do not swallow it: clean up and raise it again. If a task that talks to the API was cancelled in the middle of a request, check the state of the account before the program sends anything else.
This page is an independent explanation in plain words. The definition itself is in the source it was read from, which is the authority if the two ever differ.