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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 _cmp_by_local_origin(path1, path2):
 """Select locally originating path as best path. Locally originating routes are network routes, redistributed routes, or aggregated routes. For now we are going to prefer routes received through a Flexinet-Peer as locally originating route compared to routes received from a BGP peer. Returns None if given paths have same source. """

    # If both paths are from same sources we cannot compare them here.
    if path1.source == path2.source:
        return None

    # Here we consider prefix from NC as locally originating static route.
    # Hence it is preferred.
    if path1.source is None:
        return path1

    if path2.source is None:
        return path2

    return None