Here I get one problem need help. 
In python 2.7.5 version I write a script "test.py" as below
###
import subprocess
fileID=file('test1.log','w')
process_response = subprocess.call('netsh wlan show\ interface',stdout=fileID,shell=True)
fileID.flush()
fileID.close()
###
It run in windows7 os MSDOS console is OK
and I try to run it in STAF command

C:\> STAF local PROCESS START COMMAND python C:\>test.py WAIT STDERRTOSTDOUT RETURNSTDOUT

Response
--------
{
  Return Code: 1
  Key        : <None>
  Files      : [
    {
      Return Code: 0
      Data       : Traceback (most recent call last):
  File "C:\test.py", line 3, in <module>
    process_response = subprocess.call('netsh wlan show interface',stdout=fileID
,shell=True)
  File "C:\Python27\lib\subprocess.py", line 493, in call
    return Popen(*popenargs, **kwargs).wait()
  File "C:\Python27\lib\subprocess.py", line 672, in __init__
    errread, errwrite) = self._get_handles(stdin, stdout, stderr)
  File "C:\Python27\lib\subprocess.py", line 784, in _get_handles
    p2cread = self._make_inheritable(p2cread)
  File "C:\Python27\lib\subprocess.py", line 823, in _make_inheritable
    _subprocess.DUPLICATE_SAME_ACCESS)
WindowsError: [Error 6] The handle is invalid

    }
  ]

I just start to learn python, I dont know how to resolve, need help.