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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 _parse_authors(authors):
 """ Parse informations about authors of the book. Args: dom (obj):
 HTMLElement containing slice of the page with details. Returns: list: List of :class:`.Author` objects. Blank if no author \ found. """

    link = authors.find("a")
    link = link[0].params.get("href") if link else None

    author_list = _strip_content(authors)

    if "(" in author_list:
        author_list = author_list.split("(")[0]

    if not author_list.strip():
        return []

    return map(
        lambda author: Author(author.strip(), link),
        author_list.strip().split(",")
    )