please help me understand os.system() result

[Keisuke URAGO]

Hi, Roman.

On Tue, 20 May 2003 15:17:17 +0400 (MSD)
Roman Suzi <rnd at onego.ru> wrote:

> 
> Under Linux I have very strange results for exit status info:
> 
> >>> os.system("exit 7")
> 1792
> >>> os.system("python -c 'import sys;sys.exit(1)'")
> 256
> >>> os.system("python -c 'import sys;sys.exit(2)'")
> 512
> 
> True for my RH 7.3 and 6.2, for Pythons 1.5.2, 2.1, 2.2.2.
> 
> Any ideas?

You should shift 8bits like this.

>>> os.system("exit 7") >> 8
7
>>> os.system("python -c 'import sys;sys.exit(1)'") >> 8
1
>>> os.system("python -c 'import sys;sys.exit(2)'") >> 8
2

Cheers,

==
Keisuke URAGO <bravoNOSP at Mresourcez.org> http://open.resourcez.org/
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