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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 predecesors_pattern(element, root):
 """ Look for `element` by its predecesors. Args: element (obj):
 HTMLElement instance of the object you are looking for. root (obj):
 Root of the `DOM`. Returns: list: ``[PathCall()]`` - list with one :class:`PathCall` object (to \ allow use with ``.extend(predecesors_pattern())``). """

    def is_root_container(el):
        return el.parent.parent.getTagName() == ""

    if not element.parent or not element.parent.parent or \
       is_root_container(element):
        return []

    trail = [
        [
            element.parent.parent.getTagName(),
            _params_or_none(element.parent.parent.params)
        ],
        [
            element.parent.getTagName(),
            _params_or_none(element.parent.params)
        ],
        [element.getTagName(), _params_or_none(element.params)],
    ]

    match = root.match(*trail)
    if element in match:
        return [
            PathCall("match", match.index(element), trail)
        ]