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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 raw_clean(self, datas):
 """ Apply a cleaning on raw datas. """

        datas = strip_tags(datas)             # Remove HTML
        datas = STOP_WORDS.rebase(datas, '')  # Remove STOP WORDS
        datas = PUNCTUATION.sub('', datas)    # Remove punctuation
        datas = datas.lower()
        return [d for d in datas.split() if len(d) > 1]