On 2024-03-08, Thomas Passin via Python-list <python-list@python.org> wrote: > >> Hi, I tested this with Python 3.8. Good to know that this was fixed! > > We just learned a few posts back that it might be specific to Linux; I > ran it on Windows.
On Linux, the limit is imposed by the filesystem. Most of the "real" filesystems on Linux have a 255 character limit, a few support 256, and some of the legacy filesystems have lower limits. Reiser4 is the only one that's even remotely common which supports more than 256 -- according to https://en.wikipedia.org/wiki/Comparison_of_file_systems#Limits it supports filenames up to 3976 bytes long. NB: The behavior when the limit is exceeded might also vary from one filesystem to another. In any case, the pathlib docs for is_file() are explicit: any errors from the underlying OS and libraries will be propogated. There is nothing to fix. https://docs.python.org/3/library/pathlib.html#pathlib.Path.is_file Path.is_file() Return True if the path points to a regular file (or a symbolic link pointing to a regular file), False if it points to another kind of file. False is also returned if the path doesn’t exist or is a broken symlink; other errors (such as permission errors) are propagated. -- https://mail.python.org/mailman/listinfo/python-list