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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_words(data_dir):
 """Get list of words from history file. Parameters data_dir : pathlib.Path Directory where data is saved. Returns ------- word_list : list of str List of words. """

    words_file = data_dir.joinpath("words.txt")
    word_list = []
    if not words_file.is_file():
        return word_list
    with open(words_file, mode="r") as f:
        for l in f:
            line = l.rstrip()
            word_list.append(line)
    return word_list