[#6#wangx@manjaro-5800:~] $ python Python 3.10.4 (main, Mar 23 2022, 23:05:40) [GCC 11.2.0] on linux Type "help", "copyright", "credits" or "license" for more information. >>> from pathlib import Path >>> Path("/home/wangx").parents[-1] PosixPath('/') >>> Path("/home/wangx").parents[-1] == Path("/") False >>> Path("/home/wangx").parents[1] == Path("/") True >>> Path("/home/wangx").parents[1] PosixPath('/') >>> 

 422 class _PathParents(Sequence): 423 """This object provides sequence-like access to the logical ancestors 424 of a path. Don't try to construct it yourself.""" 425 __slots__ = ('_pathcls', '_drv', '_root', '_parts') 426 427 def __init__(self, path): 428 # We don't store the instance to avoid reference cycles 429 self._pathcls = type(path) 430 self._drv = path._drv 431 self._root = path._root 432 self._parts = path._parts 433 434 def __len__(self): 435 if self._drv or self._root: 436 return len(self._parts) - 1 437 else: 438 return len(self._parts) 439 440 def __getitem__(self, idx): 441 if isinstance(idx, slice): 442 return tuple(self[i] for i in range(*idx.indices(len(self)))) 443 444 if idx >= len(self) or idx < -len(self): 445 raise IndexError(idx) 446 return self._pathcls._from_parsed_parts(self._drv, self._root, 447 self._parts[:-idx - 1])