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Title: tarfile module missing decompression support?
Type: behavior Stage:
Components: Library (Lib) Versions: Python 2.6
Status: closed Resolution:
Dependencies: Superseder:
Assigned To: Nosy List: hravnx
Priority: normal Keywords:

Created on 2009-07-20 06:48 by hravnx, last changed 2022-04-11 14:56 by admin. This issue is now closed.

Messages (2)
msg90724 - (view) Author: Henrik ravn (hravnx) Date: 2009-07-20 06:48
When doing the following with python 2.6.2 on Windows Vista SP1:

>>> import tarfile
>>> tf = tarfile.TarFile("sometarfile.tar.bz2")

Traceback (most recent call last):
  File "<pyshell#2>", line 1, in <module>
    tf = tarfile.TarFile("sometarfile.tar.bz2")
  File "C:\Python26\lib\", line 1570, in __init__
    self.firstmember =
  File "C:\Python26\lib\", line 2322, in next
    raise ReadError(str(e))
ReadError: invalid header

This would, of course, suggest that the file was corrupted, but all 
archiving tools (tar, winrar and 7-zip) handle the file without 


>>> tf = tarfile.TarFile("sometarfile.tar.bz2", "r:bz2")

Traceback (most recent call last):
  File "<pyshell#3>", line 1, in <module>
    tf = tarfile.TarFile("e:/mono/mono-", "r:bz2")
  File "C:\Python26\lib\", line 1510, in __init__
    raise ValueError("mode must be 'r', 'a' or 'w'")
ValueError: mode must be 'r', 'a' or 'w'

which suggests that the compression support is not compiled into the 
tarfile module.
msg90725 - (view) Author: Henrik ravn (hravnx) Date: 2009-07-20 07:03
Nevermind - apparently I misunderstood the docs. Sorry.
Date User Action Args
2022-04-11 14:56:51adminsetgithub: 50773
2009-07-20 07:03:27hravnxsetstatus: open -> closed

messages: + msg90725
2009-07-20 06:48:30hravnxcreate