[GRASS-user] Error trying to run grass from python script/command line in Windows

[Jose M]

Hi,


I'm new to grass and I'm having an issue trying to run grass from a python script in my Windows 7 x64 environment.

I've read this links

https://grasswiki.osgeo.org/wiki/GRASS_and_Python#MS-Windows

https://grasswiki.osgeo.org/wiki/Working_with_GRASS_without_starting_it_explicitly

https://grass.osgeo.org/grass70/manuals/libpython/script.html#module-script.setup


But I'm not getting this working.


Here is my python script, running a simple g.list command

===
import os
import sys
import subprocess

gisbase = r'C:\OSGeo4W\apps\grass\grass-7.0.4'
os.environ['GISBASE'] = gisbase
grass_pydir = os.path.join(gisbase, "etc", "python")
sys.path.append(grass_pydir)

import grass.script as gscript
import grass.script.setup as gsetup

gisdb = os.path.join(os.path.expanduser("~"), "Documents/grassdata")
location = "nc_spm_08"
mapset = "user1"

rcfile = gsetup.init(gisbase, gisdb, location, mapset)

# use grass functions here
gscript.run_command('g.list -m type=raster')

os.remove(rcfile)
===

And this is the stacktrace I'm getting
C:\test>setupgrass.py
Traceback (most recent call last):
  File "C:\test\setupgrass.py", line 20, in <module>
    gscript.run_command('g.list -m type=raster')
  File "C:\OSGeo4W\apps\grass\grass-7.0.4\etc\python\grass\script\core.py", line 393, in run_command
    ps = start_command(*args, **kwargs)
  File "C:\OSGeo4W\apps\grass\grass-7.0.4\etc\python\grass\script\core.py", line 356, in start_command
    if debug_level() > 0:
  File "C:\OSGeo4W\apps\grass\grass-7.0.4\etc\python\grass\script\core.py", line 1519, in debug_level
    _debug_level = int(gisenv().get('DEBUG', 0))
  File "C:\OSGeo4W\apps\grass\grass-7.0.4\etc\python\grass\script\core.py", line 935, in gisenv
    s = read_command("g.gisenv", flags='n')
  File "C:\OSGeo4W\apps\grass\grass-7.0.4\etc\python\grass\script\core.py", line 446, in read_command
    return handle_errors(returncode, stdout, args, kwargs)
  File "C:\OSGeo4W\apps\grass\grass-7.0.4\etc\python\grass\script\core.py", line 313, in handle_errors
    returncode=returncode)
grass.exceptions.CalledModuleError: Module run None ['g.gisenv', '-n'] ended with error
Process ended with non-zero return code -1073741502. See errors in the (error) output.


I tried both with Grass standalone installer, and with grass installed through OSGeo4W spackages and I'm getting the same error.


Anyone knows what the problem could be?


Thanks in advance!
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