tarfile : read from a socket?

Ulli Horlacher framstag at rus.uni-stuttgart.de
Thu Feb 11 08:25:26 EST 2016


Ulli Horlacher <framstag at rus.uni-stuttgart.de> wrote:

> I have:
> 
>   sock = socket.create_connection((server,port))
>   bs = kB64
>   taro = tarfile.open(fileobj=sock.makefile('w',kB64),mode='w')
>   
>   
>         
> Traceback (most recent call last):
>   (...)
>   File "./fexit.py", line 1838, in sex_send
>     taro = tarfile.open(fileobj=sock.makefile('w',kB64),mode='w')
>   File "/usr/lib/python2.7/tarfile.py", line 1695, in open
>     return cls.taropen(name, mode, fileobj, **kwargs)
>   File "/usr/lib/python2.7/tarfile.py", line 1705, in taropen
>     return cls(name, mode, fileobj, **kwargs)
>   File "/usr/lib/python2.7/tarfile.py", line 1566, in __init__
>     self.offset = self.fileobj.tell()
> AttributeError: '_fileobject' object has no attribute 'tell'

Reading the doc helps :-)

https://docs.python.org/2/library/tarfile.html

  For special purposes, there is a second format for mode:
  'filemode|[compression]'. tarfile.open() will return a TarFile object
  that processes its data as a stream of blocks.

With 

  taro = tarfile.open(fileobj=sock.makefile('w',kB64),mode='w|')

I get no more error.


-- 
Ullrich Horlacher              Server und Virtualisierung
Rechenzentrum IZUS/TIK         E-Mail: horlacher at tik.uni-stuttgart.de
Universitaet Stuttgart         Tel:    ++49-711-68565868
Allmandring 30a                Fax:    ++49-711-682357
70550 Stuttgart (Germany)      WWW:    http://www.tik.uni-stuttgart.de/


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