I am working with GRASS 6.4.3 and python 2.7.6 under WIN 8.1.
I am a novice with computer science and coding, and I have seen many posts including those:
- Is it possible to use GRASS GIS in Python stand alone scripts?
- GRASS and Python, in order to control GRASS from outside by using python.
Here's my python code, which wants to use the GRASS module g.list to list my raster data in GRASS. I type those code in Python IDLE.
import os import sys gisbase = os.environ['GISBASE'] = 'C:\OSGeo4W64\apps\grass\grass-6.4.3' #GISBASE needs to point the root of the GRASS installation directory gisrc = 'C:\Users\Heinz\Documents\grassdata' gisdbase = 'C:\Users\Heinz\Documents\grassdata' location = 'newLocation' mapset = 'TC' LD_LIBRARY_PATH = 'C:\OSGeo4W64\apps\grass\grass-6.4.3\lib' PATH = 'C:\OSGeo4W64\apps\grass\grass-6.4.3\etc';'C:\OSGeo4W64\apps\grass\grass-6.4.3\etc\python';'C:\OSGeo4W64\apps\grass\grass-6.4.3\lib';'C:\OSGeo4W64\apps\grass\grass-6.4.3\bin';'C:\Python27';'C:\OSGeo4W64\apps\Python27';'C:\OSGeo4W64\apps\msys' PYTHONLIB = 'C:\Python27' PYTHONPATH = 'C:\OSGeo4W64\apps\grass\grass-6.4.3\etc\python' GRASS_SH = 'C:\OSGeo4W64\apps\msys\bin\sh.exe' sys.path.append(os.path.join(os.environ['GISBASE'], 'etc', 'python')) import grass.script as grass
And I have set every path in my code as environment variable in the windows control panel.
As I run module, I got the error:
Which line of my code is wrong or not necessary and what code should I add to my python script, or can't I use Python IDLE to do this?
@ustroetz I have found no file in my computer named .grassrc6 , so I create a new file named .grassrc6(which is empty), adding a line in my code:
gisrc = 'C:\Users\Heinz\.grassrc6'
But still got the same error.
Did I misunderstand the instruction in the post？
I create a text file named grass.pth in this folder
C:\OSGeo4W\apps\python27\lib\site-packages, and type those two lines in it:
Here is the list of my environment variables I have set in windows penal:
GISBASE = C:\OSGeo4W64\apps\grass\grass-6.4.3 GISRC = C:\Users\Heinz\Documents\grassdata Path = C:\Python27 C:\OSGeo4W64\apps\grass\grass-6.4.3 C:\Users\Heinz\Documents\grassdata C:\OSGeo4W64\apps\grass\grass-6.4.3\lib C:\OSGeo4W64\apps\grass\grass-6.4.3\etc\python C:\OSGeo4W64\apps\grass\grass-6.4.3\etc C:\OSGeo4W64\apps\grass\grass-6.4.3\bin C:\OSGeo4W64\apps\Python27 C:\OSGeo4W64\apps\msys C:\OSGeo4W64\apps\grass\grass-6.4.3\scripts C:\OSGeo4W64\bin C:\OSGeo4W64\apps\Python27\Lib\site-packages
then I ran my python script, and got the same error:
You can see that I have added this line:
sys.path.append('C:\OSGeo4W\bin') in my script(it's because the script didn't work before I added it), but it still got the same error.
@Martin, I have found that I have three places where python installed:
C:\OSGeo4W64\apps\Python27 C:\Python27 C:\Program Files (x86)\Quantum GIS Lisboa\apps\Python27
and I also found
site-packages files in those places, so I copied grass.pth to those places, but my script still can't work.
I also found this python-related file:
I don't know if this keeps my script useless, should I delete this file, or it doesn't matter?
I have tried this in cmd:
I will keep trying to make my script work!