pathlib.Path.is_file vs os.path.isfile difference
Thomas Passin
list1 at tompassin.net
Fri Mar 8 15:06:24 EST 2024
On 3/8/2024 2:21 PM, Grant Edwards via Python-list wrote:
> On 2024-03-08, Thomas Passin via Python-list <python-list at 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.
Sorry, I should have said on Windows.
>
> $ 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
>
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