On Thu, May 31, 2018 at 10:03 PM, Marko Rauhamaa <ma...@pacujo.net> wrote:
>
> This surprising exception can even be a security issue:
>
> >>> os.path.exists("\0")
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File "/usr/lib64/python3.6/genericpath.py", line 19, in exists
> os.stat(path)
> ValueError: embedded null byte
>
> Most other analogous reasons *don't* generate an exception, nor is that
> possibility mentioned in the specification:
>
> https://docs.python.org/3/library/os.path.html?#os.path.exists
>
> Is the behavior a bug? Shouldn't it be:
>
> >>> os.path.exists("\0")
> False
A Unix path name cannot contain a null byte, so what you have is a
fundamentally invalid name. ValueError is perfectly acceptable.
ChrisA
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