def remove_class(self, cls):
        """
        Remove a XSO class `cls` from parsing. This method raises
        :class:`KeyError` with the classes :attr:`TAG` attribute as argument if
        removing fails because the class is not registered.
        """
        del self._tag_map[cls.TAG]
        del self._class_map[cls]
def remove_class ( self , cls ) : del self . _tag_map [ cls . TAG ] del self . _class_map [ cls ]
Remove a XSO class `cls` from parsing. This method raises
        :class:`KeyError` with the classes :attr:`TAG` attribute as argument if
        removing fails because the class is not registered.