[issue13158] tarfile.TarFile.getmembers misses some entries

2011-10-12 Thread Sebastien Binet 

New submission from Sebastien Binet :

hi there,

it seems tarfile in python 3.2.2 (as installed in archlinux, but I don't see 
any additional patch applied on top of the vanilla sources:
http://projects.archlinux.org/svntogit/packages.git/tree/trunk/PKGBUILD?h=packages/python
) has troubles giving the complete content of a tar ball.

see:
$ wget http://downloads.sourceforge.net/sourceforge/boost/boost_1_44_0.tar.gz

$ md5sum boost_1_44_0.tar.gz 
085fce4ff2089375105d72475d730e15  boost_1_44_0.tar.gz

$ python --version
Python 3.2.2

$ python2 --version
Python 2.7.2

$ python ./foo.py
>>> 8145

$ python2 ./foo.py 
>>> 33635

where foo.py is:
##
import tarfile
o = tarfile.open("boost_1_44_0.tar.gz")
print(">>> %s" % len(o.getmembers()))
o.close()
## EOF ##


is it a known bug ?

(this of course prevents TarFile.extractall to be useful w/ python3...)

-s

--
messages: 145393
nosy: bins
priority: normal
severity: normal
status: open
title: tarfile.TarFile.getmembers misses some entries
type: behavior
versions: Python 3.2

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[issue13158] tarfile.TarFile.getmembers misses some entries

2011-10-13 Thread Sebastien Binet 

Sebastien Binet  added the comment:

one interesting additional piece of information is that if I un-tar that file 
and re-tar it w/o gzip compression, getmembers gets the right answer.

-s

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[issue13158] tarfile.TarFile.getmembers misses some entries

2011-10-14 Thread Sebastien Binet 

Sebastien Binet  added the comment:

thanks!

> The format of the archive is of very bad quality BTW ;-)
well, that's C++ :P

-s

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[issue1381] cmath is numerically unsound

2010-05-11 Thread Sebastien Binet 

Sebastien Binet  added the comment:

hi there,

it seems there is still a problem, at least with asinh(-2j)

see:

$ python
Python 2.6.5 (r265:79063, Apr  1 2010, 05:28:39) 
[GCC 4.4.3 20100316 (prerelease)] on linux2
Type "help", "copyright", "credits" or "license" for more information.

>>> import numpy as np
>>> np.__version__
'1.4.0'
>>> import cmath
>>> cmath.asinh(-2j)
 (1.3169578969248166-1.5707963267948966j)

>>> np.arcsinh(-2j)
(-1.3169578969248164-1.5707963267948966j)

same behaviour for python3.1:
$ python3
Python 3.1.2 (r312:79147, Apr  1 2010, 09:12:21) 
[GCC 4.4.3 20100316 (prerelease)] on linux2
Type "help", "copyright", "credits" or "license" for more information.

>>> import cmath
>>> cmath.asinh(-2j)
(1.3169578969248166-1.5707963267948966j)

cheers,
sebastien.

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nosy: +bins
versions: +Python 3.1

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[issue1381] cmath is numerically unsound

2010-05-11 Thread Sebastien Binet 

Sebastien Binet  added the comment:

hi Mark,

that may very well be so, but I'd naively standardize on C/Fortran behaviour 
(but that's probably my physicist bias)

on my platform, the following piece of C-code:

$ cat test_cmath.c
#include 
#include 

int main(int argc, char** argv)
{
  complex c = casinh(-2*I);
  printf("asinh(-2j) = %g + %gi\n", creal(c), cimag(c));
  return 0;
}
/* EOF */

gives:
$ ./a.out 
asinh(-2j) = -1.31696 + -1.5708i

cheers,
sebastien.

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[issue1381] cmath is numerically unsound

2010-05-11 Thread Sebastien Binet 

Sebastien Binet  added the comment:

> Note that in your program, you're feeding complex(-0.0, -2.0) to asinh,
> not complex(0.0, -2.0).

ah!
(ducking)

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