def elementwise_list_addition(increment, list_to_increment):
    """
    Simple method to element-wise increment a list by the values in another list of the same length.
    """

    if not list_to_increment:
        return increment
    assert len(increment) == len(list_to_increment), 'Attempted to add two lists of different lengths'
    return [sum(x) for x in zip(list_to_increment, increment)]