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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 _get_encoding(dom, default="utf-8"):
 """ Try to look for meta tag in given `dom`. Args: dom (obj):
 pyDHTMLParser dom of HTML elements. default (default "utr-8"):
 What to use if encoding is not found in `dom`. Returns: str/default: Given encoding or `default` parameter if not found. """

    encoding = dom.find("meta", {"http-equiv": "Content-Type"})

    if not encoding:
        return default

    encoding = encoding[0].params.get("content", None)

    if not encoding:
        return default

    return encoding.lower().split("=")[-1]