Is there anyway, having been passed a file handle, to get the
filename?

I am assuming not, but thought I would ask

loial <jldunn2000@googlemail.com> wrote:

> Is there anyway, having been passed a file handle, to get the
> filename?
> 
> I am assuming not, but thought I would ask
> 
> 
If you mean a Python file object then file.name (but it may not exist on 
all file objects).

If you mean a system file handle, then which filename would you like? On 
many filesystems the file exists independantly from the filenames, so a 
single file can have many names or none at all. On Linux you can use 
os.fstat() to get the inode number for the file but I think you would have 
to scan the relevant directories to find the names associated with the 
inode.

-- 
Duncan Booth http://kupuguy.blogspot.com

On Feb 17, 9:21=A0am, loial <jldunn2...@googlemail.com> wrote:
> Is there anyway, having been passed a file handle, to get the
> filename?
>
> I am assuming not, but thought I would ask

If by file handle you mean the object returned by 'file' and 'open'
functions, it has a name attribute.
If by file handle you mean the file descriptor, i.e. the integer used
for low level I/O, then there is no
way I know of. I believe that number is an index in an array of 'file
descriptors' somewhere inside the
C library ( below python interpreter level ), but I don't know if/how
an user program can access it.

Ciao
----
FB