lp.services.twistedsupport.__init_

Function	gatherResults	Returns list with result of given Deferreds.
Function	suppress_stderr	Deferred friendly decorator that suppresses output from a function.
Function	extract_result	Extract the result from a fired deferred.
Function	cancel_on_timeout	Cancel a Deferred if it doesn't fire before the timeout is up.
Function	no_traceback_failures	Decorator to return traceback-less Failures instead of raising errors.
Function	run_reactor	Run the reactor and return with the SIGCHLD handler unchanged.

def gatherResults(deferredList):

Returns list with result of given Deferreds.

This differs from Twisted's `defer.gatherResults` in two ways.

 1. It fires the actual first error that occurs, rather than wrapping
    it in a `defer.FirstError`.
 2. All errors apart from the first are consumed. (i.e. `consumeErrors`
    is True.)

:type deferredList:  list of `defer.Deferred`s.
:return: `defer.Deferred`.

def suppress_stderr(function):

Deferred friendly decorator that suppresses output from a function.

def extract_result(deferred):

Extract the result from a fired deferred.

It can happen that you have an API that returns Deferreds for compatibility with Twisted code, but is in fact synchronous, i.e. the Deferreds it returns have always fired by the time it returns. In this case, you can use this function to convert the result back into the usual form for a synchronous API, i.e. the result itself or a raised exception.

It would be very bad form to use this as some way of checking if a Deferred has fired.

def cancel_on_timeout(d, timeout, reactor=None):

Cancel a Deferred if it doesn't fire before the timeout is up.

Parameters	d	The Deferred to cancel
	timeout	The timeout in seconds
	reactor	Override the default reactor (useful for tests).
Returns	The same deferred, d.

def no_traceback_failures(func):

Decorator to return traceback-less Failures instead of raising errors.

This is useful for functions used as callbacks or errbacks for a Deferred. Traceback-less failures are much faster than the automatic Failures Deferred constructs internally.

l.s.t.__init__ : module documentation

l.s.t.init : module documentation