def __init__()

in gym_wikinav/envs/wikinav_env/web_graph.py [0:0]


    def __init__(self, articles, datasets, path_length, stop_sentinel=None):
        self.articles = articles
        self.datasets = {name: (all_paths, np.array(lengths))
                         for name, (all_paths, lengths) in datasets.items()}
        self.path_length = path_length

        assert "train" in self.datasets
        assert "valid" in self.datasets

        # Hack: use a random page as the "STOP" sentinel.
        # Works in expectation. :)
        if stop_sentinel is None:
            stop_sentinel = np.random.choice(len(self.articles))
        self.stop_sentinel = stop_sentinel
        print("Stop sentinel: ", self.stop_sentinel,
              self.articles[self.stop_sentinel].title)

        self._eval_cursor = 0