#coding:utf-8

import os,re

path = 'test'

files = os.listdir(path)

def count_word(words):

    dic = {}

    max = 0

    marked_key = ''

    #计算每个单词出现的次数

    for word in words:

        if dic.has_key(word) is False:

            dic[word] = 1

        else:

            dic[word] = dic[word] +1

    #每个字典的值之间做比较，得出最大的那个数字

    for key,value in dic.items():

        if dic[key] > max:

            max = dic[key]

            marked_key = key

    #跳出for循环打印出单词和单词出现的次数

    print(marked_key,max)

for f in files:

    with open(os.path.join(path,f)) as diary:

        words = re.findall("[a-zA-Z]+'*-*[a-zA-z]", diary.read())

        count_word(words)

#has_key(key) ： 函数用于判断键是否存在于字典中，如果键在字典dict里返回true，否则返回false。这里用于判断字典内的键是否出现过。