Difference between os.path.isdir and Path.is_dir

[Chris Angelico]

On Fri, Jul 26, 2019 at 3:54 AM eryk sun <eryksun at gmail.com> wrote:
>
> On 7/25/19, Chris Angelico <rosuav at gmail.com> wrote:
> > On Fri, Jul 26, 2019 at 3:28 AM eryk sun <eryksun at gmail.com> wrote:
> >>
> >> On 7/25/19, Kirill Balunov <kirillbalunov at gmail.com> wrote:
> >> >
> >> >>>> import os
> >> >>>> from pathlib import Path
> >> >>>> dummy = " "   # or "" or "     "
> >> >>>> os.path.isdir(dummy)
> >> > False
> >> >>>> Path(dummy).is_dir()
> >> > True
> >>
> >> I can't reproduce the above result in either Linux or Windows. The
> >> results should only be different for an empty path string, since
> >> Path('') is the same as Path('.'). The results should be the same for
> >> Path(" "), depending on whether a directory named " " exists (normally
> >> not allowed in Windows, but Linux allows it).
> >
> > Try an empty string, no spaces. To pathlib.Path, that means the
> > current directory. To os.path.abspath, that means the current
> > directory. To os.stat, it doesn't exist.
>
> That's what I said. But the OP shows os.path.isdir(" ") == False and
> Path(" ").is_dir() == True, which is what I cannot reproduce and
> really should not be able to reproduce, unless there's a bug
> somewhere.

Yeah but WHY is it different for an empty string?

I can well imagine that some OS/FS combinations will happily strip
spaces, thus devolving the " " case to the "" one.

ChrisA