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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_random_path(graph) -> List[BaseEntity]: """Get a random path from the graph as a list of nodes. :param pybel.BELGraph graph: A BEL graph """

    wg = graph.to_undirected()

    nodes = wg.nodes()

    def pick_random_pair() -> Tuple[BaseEntity, BaseEntity]:
        """Get a pair of random nodes."""
        return random.sample(nodes, k=2)

    source, target = pick_random_pair()

    tries = 0
    sentinel_tries = 5

    while not nx.has_path(wg, source, target) and tries < sentinel_tries:
        tries += 1
        source, target = pick_random_pair()

    if tries == sentinel_tries:
        return [source]

    return nx.shortest_path(wg, source=source, target=target)