On 10/18/2013 8:52 AM, Марк Коренберг wrote: > import prctl This is not a stdlib module. > prct.set_pdeathsig(.....) > if os.getppid() == 1: > raise AlreadyDead() What is your point? Your signature said >Segmentation fault If you meant that the above code segfaults, then there is a bug in prctl. Tell its authors. -- Terry Jan Reedy