from grass.pygrass.modules.shortcuts import raster as r

gscript.run_command('g.region', raster='C:\Users\rit\Documents\PhD\Projects\Intensity\input\2008_cdls\MI\cdl_30m_r_mi_2008_albers.tif')

*** CalledModuleError: Module run None ['g.region', 'raster=C:\Users\rit\Documents\PhD\Projects\Intensity\input\2008_cdls\MI\cdl_30m_r_mi_2008_albers.tif'] ended with error
ERROR: Raster map
Process ended with non-zero return code 1. See errors in the (error) output.
       <C:UsersritDocumentsPhDProjectsIntensityinput2008_cdlsMIcdl_30m_r_mi_2008_albers.tif>
       not found