[GRASS-dev] [GRASS GIS] #3828: pygrass.gis.Region.from_* should raise a ValueError if the specified map does not exist.

[GRASS GIS]

#3828: pygrass.gis.Region.from_* should raise a ValueError if the specified map
does not exist.
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 Reporter:  pmav99       |      Owner:  grass-dev@…
     Type:  enhancement  |     Status:  new
 Priority:  normal       |  Milestone:
Component:  PyGRASS      |    Version:  svn-trunk
 Keywords:               |        CPU:  Unspecified
 Platform:  Unspecified  |
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 I think it would be better if
 {{{
 pygrass.gis.Region.from_rast(raster_name)
 pygrass.gis.Region.from_vect(vector_name)
 }}}

 would raise a {{{ValueError}}} if the specified map name cannot be found.
 With the current implementation, the region remains unchanged and you have
 no clue about that:
 https://grass.osgeo.org/grass77/manuals/libpython/_modules/pygrass/gis/region.html#Region.from_rast

 Note, it might make sense to raise the Exception from within
 {{{get_mapset_raster()}}} but that function is used in more places and I
 haven't checked if this will break anything.

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Ticket URL: <https://trac.osgeo.org/grass/ticket/3828>
GRASS GIS <https://grass.osgeo.org>