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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 _interval_to_bound_points(array):
 """ Helper function which returns an array with the Intervals' boundaries. """


    array_boundaries = np.array([x.left for x in array])
    array_boundaries = np.concatenate(
        (array_boundaries, np.array([array[-1].right])))

    return array_boundaries