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

Pierre Racine Pierre.Racine at sbf.ulaval.ca
Thu Jan 27 11:48:32 EST 2011


How can I identify the exact version of GRASS I have already installed? It says only 6.4 and the version in the site is WinGRASS-6.4.SVN-r45209-1

>-----Original Message-----
>From: Martin Landa [mailto:landa.martin at gmail.com]
>Sent: 27 janvier 2011 10:22
>To: Pierre Racine
>Cc: grass-user at lists.osgeo.org
>Subject: Re: [GRASS-user] Problem importing grass.script python module on Windows
>
>Hi,
>
>2011/1/27 Pierre Racine <Pierre.Racine at sbf.ulaval.ca>:
>> 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
>
>testing GRASS 7.0 and 6.4 from [1] seems to work. Using python
>distributed with standalone installer, not PythonWin.
>
>Martin
>
>[1] http://josef.fsv.cvut.cz/wingrass/
>
>--
>Martin Landa <landa.martin gmail.com> * http://geo.fsv.cvut.cz/~landa


More information about the grass-user mailing list