import string

#统计一个文档中每个单词的出现次数
def process_file(filename):

    h=dict()

    fp=open(filename)

    for line in fp:

        process_line(line,h)

    return h



def process_line(line,h):

    line=line.replace('-',' ')



    for word in line.split():

        word=word.strip(string.punctuation+string.whitespace)

        word=word.lower()

        h[word]=h.get(word,0)+1

hist=process_file(r'c:\work\text.txt')

print(hist)