twisted.persisted.crefutil._Defer : API documentation

def __init__(self): (source)

overrides twisted.internet.defer.Deferred.__init__

Initialize a Deferred.

Parameters

canceller

a callable used to stop the pending operation scheduled by this Deferred when Deferred.cancel is invoked. The canceller will be passed the deferred whose cancelation is requested (i.e., self).

If a canceller is not given, or does not invoke its argument's callback or errback method, Deferred.cancel will invoke Deferred.errback with a CancelledError.

Note that if a canceller is not given, callback or errback may still be invoked exactly once, even though defer.py will have already invoked errback, as described above. This allows clients of code which returns a Deferred to cancel it without requiring the Deferred instantiator to provide any specific implementation support for cancellation. New in 10.1.

(type: a 1-argument callable which takes a Deferred. The return result is ignored.)

def __setitem__(self, n, obj): (source)

Undocumented

def addDependant(self, dep, key): (source)

overrides twisted.persisted.crefutil.NotKnown.addDependant

Undocumented

Method	resolveDependants	Undocumented
Method	__hash__	Undocumented

Method	resolveDependants	Undocumented
Method	__hash__	Undocumented

Method	__init__	Initialize a `Deferred`.
Method	__setitem__	Undocumented
Method	addDependant	Undocumented

twisted.persisted.crefutil._Defer(Deferred, NotKnown) class documentation

`twisted.persisted.crefutil._Defer(Deferred, NotKnown)` class documentation