def __init__(self, path, sheets):
    super().__init__()
    self._path = Path(path)
    self._sheets = sheets
    self._observer = Observer()
    self._observer.schedule(self, str(self._path.parent))
def __init__(self, path, sheets):
    super().__init__()
    self._path = Path(path)
    self._sheets = sheets
    self._observer = Observer()
    self._observer.schedule(self, str(self._path.parent))