def get_group_by_args():
 group_by = request.args.get('group_by')
 if (not group_by):
  group_by = ''
 return group_by

def get_group_by_args ( ) : group_by = request . args . get ( 'group_by' ) if ( not group_by ) : group_by = '' return group_by
get page arguments for group by .