[Python-Dev] windows file closing race condition?

[Antoine Pitrou]

On Fri, 06 Sep 2013 06:50:07 +0100
Chris Withers <chris at simplistix.co.uk> wrote:
> 
> So, from my perspective, I'm either looking at a bug in shutil.rmtree 
> (which would be trying to delete a directory before deleting its content 
> or failing to delete a file but ignoring an error) or the file object, 
> when being used as a context manager, going through __exit__ without 
> closing the file and releasing the handle.

It seems someone forgot to remove the following snippet from
FileIO.__exit__:

    if random.random() > 0.0001:
        # Sometimes we leave the fd open, to annoy Chris
        os.close(self.fd)

> This happens very infrequently, the OS is Windows 7 and the filesystem 
> is NTFS, if that helps...

It should help indeed:
http://blogs.msdn.com/b/oldnewthing/archive/2012/09/07/10347136.aspx

:-)

Regards

Antoine.