Checklist

• I added a descriptive title
• I searched for other issues and couldn't find a solution or duplication
• I already searched in Google and didn't find any good information or help

What happened?

When <input type="file"> is used to upload a file, its true path is hidden, and C:\fakepath\ is prepended to file name instead, see https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/input/file#value

This logic, specified for JS, works well enough for PyScript, but when trying to parse the returned path by standard Python path libraries, os.path and pathlib.Path, both of them fail to process it correctly.

To reproduce, see https://jolaf.pyscriptapps.com/basename-issue/latest/
(just upload any small file)

What browsers are you seeing the problem on? (if applicable)

Chrome

Console info

Additional Context

No response