Method is_active

Lib/graphlib.py:138–150

Return ``True`` if more progress can be made and ``False`` otherwise. Progress can be made if cycles do not block the resolution and either there are still nodes ready that haven't yet been returned by "get_ready" or the number of nodes marked "done" is less than the number

(self)

        return result

    def is_active(self):
        """Return ``True`` if more progress can be made and ``False`` otherwise.

        Progress can be made if cycles do not block the resolution and either there
        are still nodes ready that haven't yet been returned by "get_ready" or the
        number of nodes marked "done" is less than the number that have been returned
        by "get_ready".

        Raises ValueError if called without calling "prepare" previously.
        """
        if self._ready_nodes is None:
            raise ValueError("prepare() must be called first")
        return self._nfinished < self._npassedout or bool(self._ready_nodes)

    def __bool__(self):
        return self.is_active()