os.ChDir() not thread-safe; was : Is tempfile.mkdtemp() thread-safe?

[Gabriel Rossetti]

Gabriel Rossetti wrote:
> Hello,
>
> I'm using tempfile.mkdtemp() in a multithreading program and I've been 
> having problems with it. Sometimes it tells me the file I'm trying to 
> access (in the directory created with tempfile.mkdtemp()) doesn't 
> exist. I suspect that tempfile.mkdtemp() returns the same directory to 
> different threads sometimes. Does anyone know anything about this or 
> have a solution? I have to create unique and temp. directories to use 
> an external program that creates a temp. file with the same name every 
> time, thus if I want to call it from several threads, each call has to 
> be from a different directory.
>
> Thank you,
> Gabriel

I think I found what was wrong, I was using os.chDir(), and the current 
directory is shared by all threads :

http://www.biais.org/blog/index.php/2007/01/23/19-python-threads-and-oschdir
http://bugs.python.org/issue1367

I hope this helps anyone that ever has such a problem!

Gabriel