def directoryChangerFactory():
    if (armi.MPI_SIZE > 1):
        from .directoryChangersMpi import MpiDirectoryChanger
        return MpiDirectoryChanger
    else:
        return DirectoryChanger
def directoryChangerFactory():
    if (armi.MPI_SIZE > 1):
        from .directoryChangersMpi import MpiDirectoryChanger
        return MpiDirectoryChanger
    else:
        return DirectoryChanger