[Twisted-Python] way of dealing with returning a deferred from a method/function

[Jonathan Simms]

On Thu, 2003-12-04 at 00:21, Jp Calderone wrote:
> On Wed, Dec 03, 2003 at 09:37:38PM -0500, Itamar Shtull-Trauring wrote:
> > On Wed, 03 Dec 2003 20:48:56 -0500
> > Jonathan Simms <slyphon at twistedmatrix.com> wrote:
> > 
> > > [snip]
> > > 
> > > def aLongWait(stuff):
> > >     d = defer.Deferred()
> > >     def _():
> > >          result = doSomeStuffHere(stuff)
> > >          d.callback(result)
> > >     reactor.callLater(0, _)
> > >     return d
> > 
> > Why is this any different? all it does is make d get its result slightly
> > afterwards. It doesn't change anything fundemantal. It's virtually
> > identical to:
> > 
> > def aLongWait(stuff):
> >     result = doSomeStuffHere(stuff)
> >     d = defer.Deferred()
> >     d.callback(result)
> >     return d
> > 
> 
>   which is better expressed as:
> 
>     def aLongWait(stuff):
>         return defer.succeed(doSomeStuffHere(stuff))
> 
>   Jp

DOH!

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