import jiebafo = open('dopo.txt','r',encoding='utf-8').read()words = list(jieba.cut(fo))#取exp={
   ',','。','!','?','？'}#列出没用的字段keys=set(words)-exp #从获取的文字中删去无用的字段dic={}  #创建字典for w in keys:    if len(w)>1:        dic[w]=words.count[w]wc = list(dic.items())      #字典元组的列表wc.sort(key= lambda x:x[1],reverse=True)  #列表排序for i in range(20):         #输出top20元组    print(wc[i])