---

title: py-詞頻統(tǒng)計(jì)
date: 2018-12-21 12:32:35
tags: [解析式,lambda]
categories: Python

詞頻統(tǒng)計(jì)

import stringpath = 'C:/Users/Desktop/Walden.txt'with open(path, 'r', encoding='utf-8-sig') as text:# 首字母小寫、去掉標(biāo)點(diǎn)符號(hào)words = [s.strip(string.punctuation).lower() for s in text.read().split()]# 去除重復(fù)的單詞all_words = set(words)# 統(tǒng)計(jì)每個(gè)單詞count_words = {index:words.count(index) for index in all_words}# 對字典按照出現(xiàn)的次數(shù)降序排列，lambda表達(dá)式 for word in sorted(count_words, key=lambda x: count_words[x], reverse=True):print('{}-{} times.'.format(word, count_words[word]))

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