def make_iterable(value):
    """
    Transform into an iterable.

    Transforms a given `value` into an iterable if it is not.
    Else, return the value itself.

    Example
    -------
    >>> make_iterable(1)
    [1]

    >>> make_iterable([1])
    [1]
    """
    try:
        iter(value)
    except TypeError:
        return [value]
    else:
        return value