# -*- coding: utf-8 -*- import collections import os import re def countword(file): try: f = open(file,'r') dic = collections.defaultdict(lambda: 0) data = f.read() data = data.lower() data = re.sub(r'[\W\d]', ' ', data) datalist = data.split() for item in datalist: if item not in datalist: dic[item] = 1 dic[item] += 1 return dic except: print 'file open error!' if __name__ == '__main__': try: file = "words.txt" res = countword(file) res = sorted(res.iteritems(), key=lambda x : x[1]) for item in res: print item[0] + ":%d" % item[1] except: print 'run time error'