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added note about engine_started signal

This commit is contained in:
Pablo Hoffman 2011-08-07 03:57:09 -03:00
parent a2b0737a1d
commit f7c0aeccc6
1 changed files with 5 additions and 2 deletions
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7
docs/topics/signals.rst
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@ -43,11 +43,14 @@ engine_started
.. signal:: engine_started
.. function:: engine_started()
Sent when the Scrapy engine is started (for example, when a crawling
process has started).
Sent when the Scrapy engine has started crawling.
This signal supports returning deferreds from their handlers.
.. note:: This signal may be fired *after* the :signal:`spider_opened` signal,
depending on how the spider was started. So **don't** rely on this signal
getting fired before :signal:`spider_opened`.
engine_stopped
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