[GRASS-user] automate v.extrude from a table ?

[gene]

I forgot, my processing in Python is:

      base = grass.read_command('v.db.select', map = "boreholes", columns =
"A,B,C",fs=',', flags = 'c')
      result = base.split('\n')
      boreholes=[]
      for bore in boreholes:
              boreholes(bore.split(','))

and all that is needed is in the list but if I apply the treatment to a list
item, i.e.
     grass.run_command("v.extrude", input="boreholes", output="test", 
zshift=float(boreholes[0][1]),       height=
float(boreholes[0][0])-float(boreholes[0][1]))

the result is, as guessed, applied to all elements of the layer.
Is it possible to do without splitting the layer ?

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