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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 merge_dictionaries(base_dict, extra_dict):
 """ merge two dictionaries. if both have a same key, the one from extra_dict is taken :param base_dict: first dictionary :type base_dict: dict :param extra_dict: second dictionary :type extra_dict: dict :return: a merge of the two dictionaries :rtype: dicts """

    new_dict = base_dict.copy()
    new_dict.update(extra_dict)
    return new_dict