docs: def reset():
      """
      Clear global data and remove the handlers.
      CAUSION! This method sets as a signal handlers the ones which it has
      noticed on initialization time. If there has been another handler installed
      on top of us it will get removed by this method call.
      """
      global _handlers, python_signal
      for sig, (previous, _) in _handlers.iteritems():
          if not previous:
              previous = SIG_DFL
          python_signal.signal(sig, previous)
      _handlers = dict()