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asyncio
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.. versionadded:: 2.0
Scrapy has partial support :mod:`asyncio`. After you :ref:`install the asyncio reactor <install-asyncio>`, you may use :mod:`asyncio` and :mod:`asyncio`-powered libraries in any :doc:`coroutine <coroutines>`.
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:mod:`asyncio` support in Scrapy is experimental. Future Scrapy versions may introduce related changes without a deprecation period or warning.
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Unknown interpreted text role "mod".Installing the asyncio reactor
To enable :mod:`asyncio` support, set the :setting:`TWISTED_REACTOR` setting to 'twisted.internet.asyncioreactor.AsyncioSelectorReactor'.
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Unknown interpreted text role "setting".If you are using :class:`~scrapy.crawler.CrawlerRunner`, you also need to install the :class:`~twisted.internet.asyncioreactor.AsyncioSelectorReactor` reactor manually. You can do that using :func:`~scrapy.utils.reactor.install_reactor`:
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Using custom asyncio loops
You can also use custom asyncio event loops with the asyncio reactor. Set the :setting:`ASYNCIO_EVENT_LOOP` setting to the import path of the desired event loop class to use it instead of the default asyncio event loop.
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