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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 dump_etree(data, container=None, nsmap=None, attribs=None):
 """Convert dictionary to Simple Dublin Core XML as ElementTree. :param data: Dictionary. :param container: Name (include namespace) of container element. :param nsmap: Namespace mapping for lxml. :param attribs: Default attributes for container element. :returns: LXML ElementTree. """

    container = container or container_element
    nsmap = nsmap or ns
    attribs = attribs or container_attribs
    return dump_etree_helper(container, data, rules, nsmap, attribs)