[GRASS-user] Problem importing grass.script python module on Windows

[Pierre Racine]

Hi,

I want to write some a GRASS geoprocessing script in Python. However Python crashes at the first line when importing the grass scripting module:

from grass.script import *

>>> Unhandled exception while debugging...
Traceback (most recent call last):
  File "D:\clients\AlainPaquette\AnalyseDeCimeGRASS\CrownDelineator01.py", line 1, in <module>
    from grass.script import *
  File "C:\Program Files\GRASS-64\etc\python\grass\script\__init__.py", line 1, in <module>
    from core   import *
  File "C:\Program Files\GRASS-64\etc\python\grass\script\core.py", line 867, in <module>
    debug_level = int(gisenv().get('DEBUG', 0))
  File "C:\Program Files\GRASS-64\etc\python\grass\script\core.py", line 505, in gisenv
    s = read_command("g.gisenv", flags='n')
  File "C:\Program Files\GRASS-64\etc\python\grass\script\core.py", line 216, in read_command
    ps = pipe_command(*args, **kwargs)
  File "C:\Program Files\GRASS-64\etc\python\grass\script\core.py", line 193, in pipe_command
    return start_command(*args, **kwargs)
  File "C:\Program Files\GRASS-64\etc\python\grass\script\core.py", line 155, in start_command
    return Popen(args, **popts)
  File "C:\Program Files\GRASS-64\etc\python\grass\script\core.py", line 53, in __init__
    startupinfo, creationflags)
  File "C:\Program Files\GRASS-64\Python25\lib\subprocess.py", line 587, in __init__
    errread, errwrite) = self._get_handles(stdin, stdout, stderr)
  File "C:\Program Files\GRASS-64\Python25\lib\subprocess.py", line 700, in _get_handles
    p2cread = self._make_inheritable(p2cread)
  File "C:\Program Files\GRASS-64\Python25\lib\subprocess.py", line 745, in _make_inheritable
    DUPLICATE_SAME_ACCESS)
WindowsError: (6, 'Descripteur non valide')
[Dbg]>>>

I used GRASS 6.4, Windows XP, PythonWin

Any idea?

Thanks,

Pierre