def maxL(*it):
    """
    Calculate maximum length of provided items.

    Parameters
    ----------
    *it : objects
        Items of various lengths. Only lengths
        of iterables are returned.

    Returns
    -------
    Length of longest object (int).
    """
    m = set()
    for i in it:
        try:
            m.add(len(i))
        except TypeError:
            pass
    if len(m) > 0:
        return max(m)
    else:
        return 1