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Package twisted :: Package flow :: Module wrap :: Class _Deferred |
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Instruction
--+ |Stage
--+ | _Deferred
Wraps a Deferred object into a stage; create with flow.wrap
This stage provides a callback 'catch' for errback and callbacks. If not called, then this returns an Instruction which will let the reactor execute other operations, such as the producer for this deferred.Method Summary | |
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__init__(self,
deferred,
*trap)
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_callback(self,
res)
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_errback(self,
fail)
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executed during a yield statement by previous stage | |
Inherited from Stage | |
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return current result |
Method Details |
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_yield(self)executed during a yield statement by previous stage This method is private within the scope of the flow module, it is used by one stage in the flow to ask a subsequent stage to produce its value. The result of the yield is then stored in self.result and is an instance of Failure if a problem occurred.
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