def get_coverage_grid_extent(instance):
 instance_wcs = get_wcs_record(instance)
 grid = instance_wcs.grid
 return [((int(h) - int(l)) + 1) for (h, l) in zip(grid.highlimits, grid.lowlimits)]

def get_coverage_grid_extent ( instance ) : instance_wcs = get_wcs_record ( instance ) grid = instance_wcs . grid return [ ( ( int ( h ) - int ( l ) ) + 1 ) for ( h , l ) in zip ( grid . highlimits , grid . lowlimits ) ]
returns a list of integers with the size of the coverage extent in pixels .