Difference between os.path.isdir and Path.is_dir

[eryk sun]

On 7/25/19, Chris Angelico <rosuav at gmail.com> wrote:
> On Fri, Jul 26, 2019 at 3:54 AM eryk sun <eryksun at gmail.com> wrote:
>
>> 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?

Path.__fspath__ returns str(self), and Path.__str__ returns "." if the
path is empty, i.e. there's no drive, root, or parts.

I assume this is related to os.path.normpath("") == ".", which is
related to os.path.normpath("spam/..") == ".". However, an empty path
string isn't consistently handled as the current directory throughout
the os and os.path modules.

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

Windows trims trailing spaces and dots from the final component of a
path, unless we use a non-normalized \\?\ path.