renaming files in OS X

[jyoung79 at kc.rr.com]

Hello,

I'm considering using os.rename or shutil for renaming 
files on OS X (Snow Leopard).  However, I've read that 
shutil doesn't copy the resource fork or metadata for 
the files on OS X.  I'm not sure about os.rename though.  
I need to keep the resource fork and metadata.  Is it 
better if I just use os.system('mv …') or is os.rename 
safe to use?

Thanks.

Jay