[Twisted-Python] http://www.twistedmatrix.com/documents/howto/time

Have you thought of getting the callLater() method to return an object with a cancel() method?

Eg:

from twisted.internet import reactor

def f(): print "I'll never run."

call = reactor.callLater(5, f) call.cancel()

Other methods could be added and both would reduce reactor's namespace.

Modification of the arguments or re-scheduling the time could be such methods to add.