[GRASS-user] Running a Pyhton Script on Mac (Mapcalc)
JRadinger at gmx.at
Fri Mar 25 07:45:18 EDT 2011
Thank you nick for the tipp with the line breaks!
I opend the script with text wrangler and there were indeed
mac line endings. So I saved it with unix line endings and
now it seems to work. Maybe GRASS should be able to handle
line endings from various platforms if that is possible...
Now I get the menu for setting input and output for the script
after launching it...seems to work...anyway I have to play around
because no output is created at the moment from my script...hmmm?
-------- Original-Nachricht --------
> Datum: Wed, 23 Mar 2011 05:06:51 -0500
> Von: Nick Cahill <ndcahill at wisc.edu>
> An: GRASS user list <grass-user at lists.osgeo.org>
> Betreff: Re: [GRASS-user] Running a Pyhton Script on Mac (Mapcalc)
> I haven't run python scripts from within GRASS, but have found that they
> won't run if the line breaks are not unix line breaks, rather than Mac or
> Windows - which you'll get if you write the script in some applications.
> BBEdit is a very good editor on the Mac and will run python scripts within
> the editor. I think there's a free version too - text wrangler.
> Nick Cahill
> On Mar 23, 2011, at 2:29 AM, Johannes Radinger wrote:
> > Am 23.03.2011 um 05:22 schrieb Glynn Clements:
> >> Johannes Radinger wrote:
> >>> I'd like to run a python script on my GRASS6.5 on MacOS.
> >>> I saved a *.py script for testing with following content on my
> >>> All the needed files (upstream_part, shreve) are existing in the
> >>> location and mapset that is open. Then I tried to execute
> >>> File-->Launch Script and choose it. Then I just get back:
> >>> Launching script '/Users/Johannes Radinger/Desktop/mapcalc-test.py'...
> >>> (Tue Mar 22 10:57:15 2011)
> >>> /Users/Johannes Radinger/Desktop/mapcalc-test.py
> >>> (Tue Mar 22 10:57:15 2011) Command finished (0 sec)
> >>> and nothing happend and no map was created...
> >>> what is wrong with my script?
> >> Does the script have execute permission ("chmod +x ...")?
> > The script has execute permission so far as I think, but anyway I ran
> chmod +x on the file...
> >> Does MacOSX have the Python interpreter at /usr/bin/python?
> >> It's common practice for Python scripts to use:
> >> #!/usr/bin/env python
> > my first script included #!/usr/bin/env python, but it failed (error
> message) it couldn't find python, thats why I googled and found:
> > that is why i used /usr/bin/python.
> > I just got the tip in forum to check for the line-endings in the file,
> they might cause the problem, so I will check that.
> > But anyway, is there any other possible reason why I fail?
> > Is there any Mac-User with Python-Script-Mapcalc experience?
> >> which only requires that "python" is somewhere in $PATH, rather than
> >> assuming a fixed location. The Python scripts in 7.0 use this
> >> mechanism.
> >> --
> >> Glynn Clements <glynn at gclements.plus.com>
> > _______________________________________________
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