In [3]: def pouet(o, i):
   ...:     print o, i
   ...:     

In [4]: signal.signal(signal.SIGKILL, pouet)
---------------------------------------------------------------------------
exceptions.RuntimeError                              Traceback (most recent call last)

/home/bilboed/work/python-tests/gst-media-test/<console> 

RuntimeError: (22, 'Invalid argument')

In [5]: