[GRASS-user] Catch errors from grass.mapcalc

[Kim Besson]

Greetings

I have  python script where I try to catch, as much as possible all errors,
in order to avoid "abrupt" ERRORS from the script.
for instance I do this for grass.run_command:

p=grass.run_command("i.group", group=group_name, subgroup="subgroup", input=
input)
    if p!=0:
       grass.fatal(_("ERROR MESSAGE"))

but I'm not being able to do this for grass.mapcalc. has anyone any
suggestion or tip on how to do this for grass.mapcalc?
Thanks

Kim
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