(self, setting, item, attrs, metas)
return self._var_exists(setting, item, attrs, metas)
Return True if given item can be used with attrs and metas

        Subclasses can override this method to checks data in alternative
        representations.
Return True if given item can be used with attrs and metas
Return True if given item can be used with attrs and metas
def is_valid_item(self, setting, item, attrs, metas):
        """Return True if given item can be used with attrs and metas

        Subclasses can override this method to checks data in alternative
        representations.
        """
        if not isinstance(item, tuple):
            return True
        return self._var_exists(setting, item, attrs, metas)
def is_valid_item ( self , setting , item , attrs , metas ) : if not isinstance ( item , tuple ) : return True return self . _var_exists ( setting , item , attrs , metas )