When one of the items in the iterable passed to shlex.join() is a pathlib.Path object, it throws an exception saying it must be str or bytes. I believe it should accept Path objects just like other parts of the standard library such as subprocess.run() already do.


Python 3.9.2 (default, Feb 28 2021, 17:03:44) 
[GCC 10.2.1 20210110] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import shlex
>>> from pathlib import Path
>>> shlex.join(['foo', Path('bar baz')])
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3.9/shlex.py", line 320, in join
    return ' '.join(quote(arg) for arg in split_command)
  File "/usr/lib/python3.9/shlex.py", line 320, in <genexpr>
    return ' '.join(quote(arg) for arg in split_command)
  File "/usr/lib/python3.9/shlex.py", line 329, in quote
    if _find_unsafe(s) is None:
TypeError: expected string or bytes-like object
>>> shlex.join(['foo', str(Path('bar baz'))])
"foo 'bar baz'"


Python 3.11.0a0 (heads/main:fa15df77f0, Sep  7 2021, 18:22:35) [GCC 10.2.1 20210110] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import shlex
>>> from pathlib import Path
>>> shlex.join(['foo', Path('bar baz')])
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/nyuszika7h/.pyenv/versions/3.11-dev/lib/python3.11/shlex.py", line 320, in join
    return ' '.join(quote(arg) for arg in split_command)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/nyuszika7h/.pyenv/versions/3.11-dev/lib/python3.11/shlex.py", line 320, in <genexpr>
    return ' '.join(quote(arg) for arg in split_command)
                    ^^^^^^^^^^
  File "/home/nyuszika7h/.pyenv/versions/3.11-dev/lib/python3.11/shlex.py", line 329, in quote
    if _find_unsafe(s) is None:
       ^^^^^^^^^^^^^^^
TypeError: expected string or bytes-like object, got 'PosixPath'
>>> shlex.join(['foo', str(Path('bar baz'))])
"foo 'bar baz'"