[QGIS 1.x] Grass & Python (sur Windows)

Bonjour,

Comment fait-on pour utiliser Grass Dans Qgis (1.8) en python.

J'ai essaié de la façon suivante comme trouvé sur le net, mais j'ai un message d'erreur :

>>> import os

>>> import sys

>>> gisbase = os.environ['GISBASE'] = "C:/SIG/QGIS/apps/grass/grass-6.4.2"

>>> sys.path.append(os.path.join(os.environ['GISBASE'], "etc", "python"))

>>> import grass.script

Traceback (most recent call last):

  File "<input>", line 1, in <module>

  File "C:/SIG/QGIS/apps/qgis/./python\qgis\utils.py", line 309, in _import

    mod = _builtin_import(name, globals, locals, fromlist, level)

  File "C:/SIG/QGIS/apps/grass/grass-6.4.2\etc\python\grass\script\__init__.py", line 1, in <module>

    from core   import *

  File "C:/SIG/QGIS/apps/qgis/./python\qgis\utils.py", line 309, in _import

    mod = _builtin_import(name, globals, locals, fromlist, level)

  File "C:/SIG/QGIS/apps/grass/grass-6.4.2\etc\python\grass\script\core.py", line 1043, in <module>

    debug_level = int(gisenv().get('DEBUG', 0))

  File "C:/SIG/QGIS/apps/grass/grass-6.4.2\etc\python\grass\script\core.py", line 537, in gisenv

    s = read_command("g.gisenv", flags='n')

  File "C:/SIG/QGIS/apps/grass/grass-6.4.2\etc\python\grass\script\core.py", line 238, in read_command

    ps = pipe_command(*args, **kwargs)

  File "C:/SIG/QGIS/apps/grass/grass-6.4.2\etc\python\grass\script\core.py", line 215, in pipe_command

    return start_command(*args, **kwargs)

  File "C:/SIG/QGIS/apps/grass/grass-6.4.2\etc\python\grass\script\core.py", line 177, in start_command

    return Popen(args, **popts)

  File "C:/SIG/QGIS/apps/grass/grass-6.4.2\etc\python\grass\script\core.py", line 56, in __init__

    startupinfo, creationflags)

  File "C:\SIG\QGIS\apps\Python27\lib\subprocess.py", line 672, in __init__

    errread, errwrite) = self._get_handles(stdin, stdout, stderr)

  File "C:\SIG\QGIS\apps\Python27\lib\subprocess.py", line 784, in _get_handles

    p2cread = self._make_inheritable(p2cread)

  File "C:\SIG\QGIS\apps\Python27\lib\subprocess.py", line 823, in _make_inheritable

    _subprocess.DUPLICATE_SAME_ACCESS)

WindowsError: [Error 6] Descripteur non valide

>>> 

Merci d'avance

Note du modérateur :

il faut préciser que c'est sur Windows, car c'est plus complexe que sur Linux ou Mac OS X