jieba分词

import jieba
excludes = {"什么","一个","我们","那里","你们","如今","说道","知道","起来","姑娘","这里","出来","他们","众人","自己",
            "一面","只见","怎么","两个","没有","不是","不知","这个","听见","这样","进来","咱们","告诉","就是",
            "东西","袭人","回来","只是","大家","只得","老爷","丫头","这些","不敢","出去","所以","不过","的话","不好",
            "姐姐","探春","鸳鸯","一时","不能","过来","心里","如此","今日","银子","几个","答应","二人","还有","只管",
            "这么","说话","一回","那边","这话","外头","打发","自然","今儿","罢了","屋里","那些","听说","小丫头","不用","如何"}

txt = open("红楼梦.txt","r",encoding=‘utf-8‘).read()
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不写明路径的话，默认和保存的python文件在同一目录下 注意打开格式是utf-8，这个可以打开txt文件，选择另存为，注意界面右下角的格式
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words = jieba.lcut(txt)
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利用jieba库将红楼梦的所有语句分成词汇
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counts = {}
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创建的一个空的字典
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for word in words:
    if len(word) == 1:      #如果长度是一，可能是语气词之类的，应该删除掉
        continue
    else:
        counts[word] = counts.get(word,0) + 1
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    如果字典中没有这个健（名字）则创建，如果有这个健那么就给他的计数加一
    [姓名:数量]，这里是数量加一
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for word in excludes:
    del(counts[word])
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    #这一步：如果列出的干扰词汇在分完词后的所有词汇中那么删除
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items = list(counts.items())
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把保存[姓名：个数]的字典转换成列表
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items.sort(key=lambda x:x[1],reverse = True)
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对上述列表进行排序，‘True‘是降序排列
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for i in range(20):
    word,count = items[i]
    print("{0:<10}{1:>5}".format(word,count))