New submission from jimbo1qaz_ via Gmail <[email protected]>:
I'm writing a program taking paths from user input through CLI.
`path` is a pathlib.Path().
Since Windows doesn't expand asterisks, I check if the path doesn't exist. If
so I expand using Path().glob(path).
Unfortunately on Windows, if `path` (type: Path) contains asterisks, checking
`path.exists()` or `path.is_dir()` raises WinError 123.
Python 3.7.0 (default, Jun 28 2018, 08:04:48) [MSC v.1912 64 bit (AMD64)] ::
Anaconda, Inc. on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> from pathlib import Path
>>> Path('*').exists()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Users\jimbo1qaz\Miniconda3\envs\python37\lib\pathlib.py", line 1318,
in exists
self.stat()
File "C:\Users\jimbo1qaz\Miniconda3\envs\python37\lib\pathlib.py", line 1140,
in stat
return self._accessor.stat(self)
OSError: [WinError 123] The filename, directory name, or volume label syntax is
incorrect: '*'
>>> Path('*').is_dir()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Users\jimbo1qaz\Miniconda3\envs\python37\lib\pathlib.py", line 1330,
in is_dir
return S_ISDIR(self.stat().st_mode)
File "C:\Users\jimbo1qaz\Miniconda3\envs\python37\lib\pathlib.py", line 1140,
in stat
return self._accessor.stat(self)
OSError: [WinError 123] The filename, directory name, or volume label syntax is
incorrect: '*'
I also reproduced on Miniconda 3.6.6, 3.7.0, and official Python 3.7.1.
According to https://bugs.python.org/issue29827 , os.path.exists() (not
Path.exists() ) returns False on any OSError.
-----------------
On Linux, checking paths with null bytes (a less common occurrence) raises a
different error:
>>> import pathlib
>>> pathlib.Path("\x00").exists()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python3.6/pathlib.py", line 1336, in exists
self.stat()
File "/usr/lib/python3.6/pathlib.py", line 1158, in stat
return self._accessor.stat(self)
File "/usr/lib/python3.6/pathlib.py", line 387, in wrapped
return strfunc(str(pathobj), *args)
ValueError: embedded null byte
----------
components: Library (Lib)
messages: 330371
nosy: jimbo1qaz_
priority: normal
severity: normal
status: open
title: OSError [WinError 123] when testing if pathlib.Path('*') (asterisks)
exists
versions: Python 3.6, Python 3.7
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Python tracker <[email protected]>
<https://bugs.python.org/issue35306>
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