/Users/ken/duptemp/foo and others are invalid filenames. What?

[kwloafman]

On macOS 12.6.6. Basically, it's marking anything with a leading '/' as invalid.

$ ipython
Python 3.11.3 (main, Apr  7 2023, 19:29:16) [Clang 14.0.0 (clang-1400.0.29.202)]
Type 'copyright', 'credits' or 'license' for more information
IPython 8.13.2 -- An enhanced Interactive Python. Type '?' for help.

In [1]: import pathvalidate as pv

In [2]: pv.is_valid_filepath('/Users/ken/duptemp/foo')
Out[2]: False

In [3]: pv.is_valid_filepath('~/duptemp/foo')
Out[3]: True

In [4]: pv.is_valid_filepath('bar/zot')
Out[4]: True

In [5]: pv.is_valid_filepath('/bar/zot')
Out[5]: False

[thombashi]

That is because platform argument defaults to "universal".
universal means that check if the file path is usable on any OS.
File paths starting with / is invalid for Windows.
The return value will be True if you set platform keyword argument value for any of "auto", "POSIX", "macOS".