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``tornado.util`` --- General-purpose utilities

docs/util.rst

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tornado.util --- General-purpose utilities

.. testsetup::

from tornado.util import *

.. automodule:: tornado.util :members:

.. class:: TimeoutError

    Exception raised by `.gen.with_timeout` and `.IOLoop.run_sync`.

    .. versionchanged:: 5.0
       Unified ``tornado.gen.TimeoutError`` and
       ``tornado.ioloop.TimeoutError`` as ``tornado.util.TimeoutError``.
       Both former names remain as aliases.

    .. versionchanged:: 6.2
       ``tornado.util.TimeoutError`` is an alias to :py:class:`asyncio.TimeoutError`