I don't quite understand what you are saying here:

2 * 256 is 512,
2 ** 256 is some extremely large number.

2**12 is 4096.

So how does 3072 factor into this?

Could you explain what you mean by "the error in the top half of a sixteen-bit value"?

This makes no sense to me at this moment.

-h

Hari Sekhon


Steve Holden wrote:
Hari Sekhon wrote:
  
I'm running a command like

import commands
result = commands.getstatusoutput('somecommand')
print result[0]
3072


However, this exit code made no sense so I ran it manually from the 
command line in bash on my linux server and it gives the exit code as 
12, not this weird 3072 number.

So I tried os.system('somecommand') in the interactive python shell and 
it too returned the same result for the exit code as the unix shell, 12, 
but re-running the commands.getstatusoutput() with the exact same 
command still gave 3072.


Is commands.getstatusoutput() broken or something?


-h

    
No, it's just returning the error code in the top half of a sixteen-bit 
value. You will notice that 3072 == 2 * 256.

That's always been the way the Unix return code has been returned 
programattically, but the shell shifts it down to make it more usab;e.

regards
  Steve
  
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