Exceptions

Source code: Lib/asyncio/exceptions.py

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exception asyncio.TimeoutError

exception asyncio.TimeoutError(*args: object) → TimeoutError

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A deprecated alias of TimeoutError, raised when the operation has exceeded the given deadline.

Changed in version 3.11: This class was made an alias of TimeoutError.

exception asyncio.CancelledError

exception asyncio.CancelledError(*args: object) → asyncio.exceptions.CancelledError

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The operation has been cancelled.

This exception can be caught to perform custom operations when asyncio Tasks are cancelled. In almost all situations the exception must be re-raised.

Changed in version 3.8: CancelledError is now a subclass of BaseException rather than Exception.

exception asyncio.InvalidStateError

exception asyncio.InvalidStateError(*args: object) → asyncio.exceptions.InvalidStateError

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Invalid internal state of Task or Future.

Can be raised in situations like setting a result value for a Future object that already has a result value set.

exception asyncio.SendfileNotAvailableError

exception asyncio.SendfileNotAvailableError(

*args: object,

) → asyncio.exceptions.SendfileNotAvailableError

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The “sendfile” syscall is not available for the given socket or file type.

A subclass of RuntimeError.

exception asyncio.IncompleteReadError

exception asyncio.IncompleteReadError(

partial: bytes,

expected: int | None,

) → asyncio.exceptions.IncompleteReadError

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The requested read operation did not complete fully.

Raised by the asyncio stream APIs.

This exception is a subclass of EOFError.

expected: int | None

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The total number (int) of expected bytes.

partial: bytes

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A string of bytes read before the end of stream was reached.

exception asyncio.LimitOverrunError

exception asyncio.LimitOverrunError(

message: str,

consumed: int,

) → asyncio.exceptions.LimitOverrunError

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Reached the buffer size limit while looking for a separator.

Raised by the asyncio stream APIs.

consumed: int

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The total number of to be consumed bytes.