Marko Rauhamaa <marko at pacujo.net> wrote: > Correct. The timer callback function (hello) would be called in a > separate thread. An exception raised in one thread cannot be caught in > the main thread. In general, there is no way for a thread to interrupt a > sibling thread that is in a blocking function call. Then threading.Timer is not a solution for my problem. -- Ullrich Horlacher Server und Virtualisierung Rechenzentrum IZUS/TIK E-Mail: horlacher at tik.uni-stuttgart.de Universitaet Stuttgart Tel: ++49-711-68565868 Allmandring 30a Fax: ++49-711-682357 70550 Stuttgart (Germany) WWW: http://www.tik.uni-stuttgart.de/