Hi GRASS users,
maybe someone can help me with the cleanup process in a
GRASS python script I am writing. The script uses the
gparser functionality to get the needed files etc via
the GUI.
I also try to include a proper cleanup process within
the script which deletes all the tmp maps created. This
should also work if the script stops (e.g due to an error).
So I think I FIRST need to define all the files which
should be removed. The problem is that my script includes
a while loop (iteration) so I can't really say which
files will be created in advance. How can I define a proper
cleanup in such cases?
The script looks at the moment like:
#!/usr/bin/env python
...
import grass.script as grass
tmp_rast = None
tmp_vect = None
def cleanup():
if (tmp_rast):
grass.run_command("g.remove",
rast = tmp_map_rast,
quiet = True)
def main():
max_count = 5 # maximum number of iterations
#global variables for cleanup - standard values
global tmp_rast
tmp_rast = [f + str(os.getpid()) for f in
(["r%d_tmp_" % x for x in range(max_count+1)]+
["rt%d_tmp_" % x for x in range(max_count+1)]+
["r_diff%d_tmp_" % x for x in range(max_count+1)])]
...
diff = 9999
while (diff is not None):
#In this while loop all the tmp-files are created
...
if __name__ == "__main__":
options, flags = grass.parser()
atexit.register(cleanup)
sys.exit(main())
How can I improve this? Maybe someone of you is more experienced than I am.
Thank you so much!
Best regards,
Johannes
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