<s> class SettingsMixin ( object ) : <EOL> def verify_setting_exists ( self , setting_name , message = None ) : <EOL> from will import settings <EOL> if not hasattr ( settings , setting_name ) : <EOL> self . say ( "<STR_LIT>" % setting_name , message = message ) <EOL> return False <EOL> return True </s>
