run r.stats as a quiet module in GRASS-Python script

Question

Has anyone else used r.stats as a quiet module in a GRASS-python script?

As part of my program I'm using:

grass.run_command("r.stats", flags='l', input=<file>, output=<*.csv file>, fs=',')

I'm using the 'l' flag here to print out category labels. If I change the flags to 'lq' r.stats does not produce the specified *.csv file. If I use the flags as '-q', r.stats runs as a quiet module, but it only creates a *.csv file with one row that describes the category values. For my output, I need both category values and their respective labels.

Any ideas?

Answer 1

Okay so I figured out a solution. Probably will only work for GRASS-PYTHON codes.

In the environmental variables portion of my script I added:

os.environ['GRASS_VERBOSE']='0' #runs modules silently

Answer 2

The proper way to set the -q flag in a GRASS-Python script inside a grass.run_command() is quiet = True. In the example given in the question (for grass64), that would be:

grass.run_command("r.stats", flags='l', input=<file>, output=<*.csv file>, fs=',', quiet = True)

Read also the GRASS-Wiki page GRASS_Python_Scripting_Library for examples.