def complete(self, text):
        """Return the next possible completion for 'text'.

        This is called successively with state == 0, 1, 2, ... until it
        returns None.  The completion should begin with 'text'.

        """
        if self.use_main_ns:
            # In pydev this option should never be used
            raise RuntimeError('Namespace must be provided!')
            self.namespace = __main__.__dict__  # @UndefinedVariable

        if "." in text:
            return self.attr_matches(text)
        else:
            return self.global_matches(text)