Get Info

Starting GRASS in Python:

>>> import grass.script as grass

Environments

Command	Description
grass.gisenv()	Get GRASS environment info as a dictionary

'GISDBASE': 'C:/GRASS/GIS DataBase',
'GRASS_GUI': 'wxpython',
'LOCATION_NAME': 'WGS84',
'MAPSET': 'PERMANENT'

Command	Description
grass.setup.init(gisbase, gisdbase, location, mapset)	Set system variables to run scripts

>>> gisbase = os.environ['GISBASE']
>>> gisdbase = 'C:/GRASS/GIS DataBase'
>>> location = 'LAEA'
>>> mapset = 'PERMANENT'
>>> import grass.script.setup as gsetup
>>> gsetup.init(gisbase, gisdbase, location, mapset)

Region

Command	Description
grass.region()	Dictionary of region definition

'cells': Number of cells
'rows': Rows
'cols': Columns
'nsres': Y pixel resolution
'ewres': X pixel resolution
'w': X min
's': Y min
'e': X max
'n': Y max

List of Layers

Command	Description	Output
grass.list_strings({'rast','vect'})	List of elements as strings	>>> ['myrast@PERMANENT']
grass.list_grouped({'rast','vect'})	List grouped by mapsets as a dictionary	>>> {'PERMANENT': ['myrast']}
grass.list_grouped({'rast','vect'})['MAPSET']	List of elements as strings in the mapset	>>> ['myrast']
grass.mlist({'rast','vect'})	List of elements as strings in all mapsets	>>> ['myrast']