def generate_Layout(graph):
    """
        A method to generate a layout of a network, such as {v1, v2, v3， ....， vn}.

        Parameter(s):
        -------------
        graph : TemporalDiGraph
                A directed, temporal graph.

        Returns:
        --------
        layout : list
            a layout of the network.

    """

    # generate a layout based on the order of their labels
    layout = graph.nodes.labels()
    return layout