[GRASS-dev] Re: WIKI Python script example won't run

[Michael Barton]

I've found the answer to the question below, but I'm not sure that I  
understand. I've used the same editor for all my Python coding for  
awhile now. It is nice and clean, keeping to indentation standards,  
etc. I turned on invisible characters and there is a linefeed after  
every line.

However, if I pass the script through another editor and save it, I  
don't get this error about a missing line feed.

I'm not sure what is going on. I got the missing linefeed error when I  
dropped the WIKI code directly into the editor and saved it.

Michael

On Jul 16, 2008, at 10:38 PM, Michael Barton wrote:

> I wanted to see how it would be to port one of the bash scripts to  
> Python. I followed the WIKI template and it didn't run. So I made a  
> script that is ONLY from the WIKI template and it doesn't run  
> either. I've tried it by just typing the script into the command  
> prompt and also by typing:
>
> python $GISBASE/scripts/pytest.py
>
> The error is the same every time and is rather strange:
>
> Line too long or missing newline at line 75
>
> Line 75 is the last line (blank) of the script. If I get rid of this  
> line, I still get the error, but on line 74.
>
> I'll paste in the WIKI script below so you won't have to look it up.  
> It seems OK and the error is kind of enigmatic. I've tried various  
> permutations and get the same results.
>
>
> Michael
>
>
> ================ WIKI script ===================
>
> #!/usr/bin/python
> ############################################################################
> #
> # MODULE:       g.example
> #
> # AUTHOR(S):    Jane GrassUser
> #
> # PURPOSE:      Demonstrates GRASS parser usage in a Python script
> #
> # COPYRIGHT:    (c) 2007 The GRASS Development Team
> #
> #               This program is free software under the GNU General  
> Public
> #               License (>=v2). Read the file COPYING that comes  
> with GRASS
> #               for details.
> #
> ############################################################################
> #
> # REQUIREMENTS:
> #      - footool: http://www.example.org
>
> #%Module
> #%  description: g.parser test script
> #%  keywords: keyword1, keyword2
> #%End
> #%flag
> #%  key: f
> #%  description: a flag
> #%END
> #%option
> #%  key: raster
> #%  type: string
> #%  gisprompt: old,cell,raster
> #%  description: raster input map
> #%  required : yes
> #%end
> #%option
> #%  key: vector
> #%  type: string
> #%  gisprompt: old,vector,vector
> #%  description: vector input map
> #%  required : yes
> #%end
> #%option
> #%  key: option1
> #%  type: string
> #%  description: an option
> #%  required : yes
> #%end
>
> import sys
> import os
>
> def main():
>
>    #### add your code here ####
>
>    print ""
>
>    if ( os.getenv("GIS_FLAG_F") == "1" ):
>        print "Flag -f set"
>    else:
>        print "Flag -f not set"
>
>    print "Value of GIS_OPT_OPTION1: %s" % os.getenv("GIS_OPT_OPTION1")
>    print "Value of GIS_OPT_RASTER:  %s" % os.getenv("GIS_OPT_RASTER")
>    print "Value of GIS_OPT_VECTOR:  %s" % os.getenv("GIS_OPT_VECTOR")
>
>    #### end of your code ####
>    return
>
> if __name__ == "__main__":
>    if ( len(sys.argv) <= 1 or sys.argv[1] != "@ARGS_PARSED@" ):
>        os.execvp("g.parser", [sys.argv[0]] + sys.argv)
>    else:
> 	main();
>