def get_subjects_dir(subjects_dir=None, raise_error=False):
 if (subjects_dir is None):
  subjects_dir = get_config('SUBJECTS_DIR', raise_error=raise_error)
 return subjects_dir

def get_subjects_dir ( subjects_dir = None , raise_error = False ) : if ( subjects_dir is None ) : subjects_dir = get_config ( 'SUBJECTS_DIR' , raise_error = raise_error ) return subjects_dir
safely use subjects_dir input to return subjects_dir .