python中利用jieba库统计词频 counts[word] = counts.get(word 0)+1的使用

import jieba txt = open("阿甘正传-网络版.txt","r",encoding ="utf-8").read()words = jieba.lcut(txt) #用jieba库对文本进行中文分词，输出可能的分词的精确模式counts ={} #新建一个空字典for word in words:if len(word) == 1: #挑出单个的分词（不计数）continueelse:counts[word] = counts.get(word,0)+1#对word出现的频率进行统计，当word不在words时，返回值是0，当word在words中时，返回+1，以此进行累计计数items = list(counts.items())items.sort(key = lambda x:x[1],reverse = True)for i in range(10):word,count = items[i] #返回相对应的键值对print("{0}:{1}".format(word,count))

注： counts[word] = counts.get(word,0)+1 是对进行计数word出现的频率进行统计，当word不在words时，返回值是0，当word在words中时，返回+1，以此进行累计计数。

运行结果: