[Twisted-Python] Newbie question

[Petr Mifek]

Hi,

try exactly what it says, that is, supply callback with an argument:

example:

result = 'I'm the result'
reactor.callLater(4, d.callback, result)

Then it should do.

Petr



Simon Pickles napsal(a):
> Hi,
> 
> I thought I'd better try and understand twisted a bit more rather than 
> just using it!
> 
> Can anyone tell me why this code is erroneous?
> 
> #####################
> from twisted.internet import reactor, defer
> 
> print "test"
> 
> def printResult(s):
>    print "Data: %s", str(s)
> 
> def printEnd():
>    print "End"
> 
> def printError(error):
>    print error
> 
> d = defer.Deferred()
> 
> reactor.callLater(4, d.callback)
> d.addCallback(printEnd)
> d.addErrback(printError)
> 
> reactor.run()
> ###################################
> I get the error:
> 
> TypeError: callback() takes exactly two arguments (1 given) in 
> twisted/internet/base.py call.func(*call.args, **call.kw)
> 
> Thanks
> 
> Simon
>