thread_pool.py 文件源码

def successful(self):
        """
        Return whether the call completed without raising an exception.
        Will raise AssertionError if the result is not ready.
        """

        if not self.ready():
            raise exceptions.AssertionError("Function is not ready")
        res = self._q.get()
        self._q.put(res)

        if isinstance(res, Exception):
            return False
        return True