Re: pathlib.Path.is_file vs os.path.isfile difference

On 2024-03-08, Thomas Passin via Python-list <python-list@python.org> wrote:

On 3/8/2024 1:03 PM, Albert-Jan Roskam via Python-list wrote:

     Hi,
     I was replacing some os.path stuff with Pathlib and I discovered this:
     Path(256 * "x").is_file()  # OSError
     os.path.isfile(256 * "x")  # bool
     Is this intended? Does pathlib try to resemble os.path as closely as
     possible?

>
You must have an very old version of Python.  I'm running 3.12.2 and it
returns False.

 It throws OSError with Python 3.11.8 on Linux.

 $ python
Python 3.11.8 (main, Feb 23 2024, 16:11:29) [GCC 13.2.1 20240113] on linux
Type "help", "copyright", "credits" or "license" for more information.

import pathlib
pathlib.Path(256 * "x").is_file()

Traceback (most recent call last):
   File "<stdin>", line 1, in <module>
   File "/usr/lib/python3.11/pathlib.py", line 1267, in is_file
     return S_ISREG(self.stat().st_mode)
                    ^^^^^^^^^^^
   File "/usr/lib/python3.11/pathlib.py", line 1013, in stat
     return os.stat(self, follow_symlinks=follow_symlinks)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
OSError: [Errno 36] File name too long: 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'

>
import os
os.path.isfile(256 * "x")

False