def freq(tkns, skip_stopwords=True):
tot = len(tkns)
if skip_stopwords:
tkns = [tkn for tkn in tkns if tkn not in stopwords]
fq = FreqDist(tkns).items()
fq = [[item[0], item[1], item[1] / tot] for item in fq]
fq.sort(key=lambda x: x[1], reverse=True)
return fq
