def _add_handler_for_watch(self, event_handler, watch):
    try:
      self._handlers[watch].add(event_handler)
    except __HOLE__:
      self._handlers[watch] = set([event_handler])
dataset/ETHPy150Open austinwagner/sublime-sourcepawn/watchdog/observers/api.py/BaseObserver._add_handler_for_watch