def __init__(self, docs):
        self.D = len(docs)
        self.avgdl = self.D / sum([len(doc)+0.0 for doc in docs])
        self.docs = docs
        self.f = []
        self.df = {}
        self.idf = {}
        self.k1 = 1.5
        self.b = 0.75
        self.init()
dataset/ETHPy150Open isnowfy/snownlp/snownlp/sim/bm25.py/BM25.__init__/swapped operands of `/`