>From the error message I take that output_v is a list but the write command expects a string. So you need to convert your output_v to string in order to use write.
One trick that I learned recently is how to concatenate values from a list with using a separator. 1) convert the items in your list to strings: output_str = [str(i) for i in output_v] 2) create a string using the join method: line = '<separator>'.join(output_str) -- where <separator> is anything you choose, comma, space, tab, | 3) write your string There might be other ways to do this but I found this solution quite easy Hope it helps cheers Daniel On Wed, Feb 23, 2011 at 9:47 AM, katrin eggert <[email protected]> wrote: > hello Glynn > I'm trying to parse a list of strings like this: > sys.stdout.write(output_v) > And I get this error > TypeError: argument 1 must be string or read-only character > buffer, not list > Any suggestion to do this? > Thanks > 2011/2/10 Glynn Clements <[email protected]> >> >> katrin eggert wrote: >> >> > I have built a GRASSPy Script to read a few text files (r.in.text.py) >> > At the end of the file I do a return of a list of integers with: >> > values=[1,2,4,5,6,43,32,553,2] >> > >> > return values >> > >> > My question is: I have another GRASS python script that and I want to >> > call >> > r.in.text.py to get these values. >> > What GRASS python functionality shall i use to retrieve these values? (I >> > suppose grass.run_command is not a good idea). >> >> Have r.text.py write the data to stdout, then invoke r.text.py via >> grass.read_command() or grass.parse_command(). >> >> For more complex data, you could add an option to r.text.py to write >> the data in Python's "pickle" format. >> >> -- >> Glynn Clements <[email protected]> > > > _______________________________________________ > grass-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-user > > _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
