[GRASS-user] Use of g.mlist inside r.series

[Brian Sanjeewa Rupasinghe]

Hi,

I am using following Python code to add all raster maps with wildcard name:
viewshed*.

grass.run_command ("r.series", input="`g.mlist pattern = 'viewshed*' sep =,
`", output = 'xx', method = 'sum')

But it does not work saying:

WARNING: Illegal filename <`g.mlist pattern = 'viewshed*' sep =>. Character
< > not allowed.
ERROR: Raster map <`g.mlist pattern = 'viewshed*' sep => not found

What is the possible error? I am using GRASS in Windows7
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