.. currentmodule:: asyncio

Exceptions

Source code: :source:`Lib/asyncio/exceptions.py`

.. exception:: TimeoutError

 The operation has exceeded the given deadline.

 .. important::
 This exception is different from the builtin :exc:`TimeoutError`
 exception.

.. exception:: CancelledError

 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.

 .. versionchanged:: 3.8

 :exc:`CancelledError` is now a subclass of :class:`BaseException`.

.. exception:: InvalidStateError

 Invalid internal state of :class:`Task` or :class:`Future`.

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

.. exception:: SendfileNotAvailableError

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

 A subclass of :exc:`RuntimeError`.

.. exception:: IncompleteReadError

 The requested read operation did not complete fully.

 Raised by the :ref:`asyncio stream APIs<asyncio-streams>`.

 This exception is a subclass of :exc:`EOFError`.

 .. attribute:: expected

 The total number (:class:`int`) of expected bytes.

 .. attribute:: partial

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

.. exception:: LimitOverrunError

 Reached the buffer size limit while looking for a separator.

 Raised by the :ref:`asyncio stream APIs <asyncio-streams>`.

 .. attribute:: consumed

 The total number of to be consumed bytes.

此处可能存在不合适展示的内容,页面不予展示。您可通过相关编辑功能自查并修改。

如您确认内容无涉及 不当用语 / 纯广告导流 / 暴力 / 低俗色情 / 侵权 / 盗版 / 虚假 / 无价值内容或违法国家有关法律法规的内容,可点击提交进行申诉,我们将尽快为您处理。