Python自然语言分析（第四期）：第2课书面作业

#  -*- coding: UTF-8 -*-import nltkfrom nltk.book import  *len_text2 = len(text2)len_dis_text2 = len(set(text2))print("在text2中有" + str(len_text2) + "个词")print("在text2中有" + str(len_dis_text2) + "个不同的词")print("因为言情小说词汇多样性得分是8.3，幽默小的词汇多样性得分是4.3，所以是幽默小说文体中的词汇更丰富")text5.collocations()word_li = [w for w in text5 if len(w) == 4]fdist = FreqDist(word_li)sorted_word_li = sorted(fdist.keys(), key=lambda x: fdist[x], reverse=True)for w in sorted_word_li:    print "%s\t%d; " % (w, fdist[w]),print ("")def percent(word,text):    freq = len([w for w in text if w == word]) * 1.0 / len(text)*100    return freqprint (str(round(percent("JOIN",text5),3))+"%")