Error compressing tar file

[Mike]

El domingo, 2 de marzo de 2014 21:38:49 UTC-3, Mike  escribió:
> Hello,
> 
> I have the script that make a backup file (this process is ok), but now i wish compress the file on tar file format. But i have problem syntax in the line of the tar function. 
> 
> 
> 
> The error is 
> 
> 
> 
> [root at master ~]# python bkp_db.py 
> 
>   File "bkp_db.py", line 19
> 
>     tar = tarfile.open(dumpfile)+'.tar.gz','w:gz')
> 
>                                                  ^
> 
> 
> 
> Note: The 'dumpfile' is the variable for my dump generate with format db_02-27-14
> 
> 
> 
> ......
> 
> tar = tarfile.open(dumpfile)+'.tar.gz','w:gz')
> 
> tar.add(os.path.join(dumpfile), arcname=dumpfile)
> 
> tar.close()
> 
> ........
> 
> 
> 
> Wath is the correct sintax?
> 
> 
> 
> 
> 
> Thanks.

Hello,
without ")" i have the same sintax error: 

[root at master ~]# python bkp_db.py 
Traceback (most recent call last):
  File "bkp_db.py", line 19, in <module>
    tar = tarfile.open(dumpfile + '.tar.gz','w:gz')
TypeError: unsupported operand type(s) for +: 'file' and 'str' 

Thanks.