Python练习册，第 0004 题

# coding=utf-8#第 0004 题：任一个英文的纯文本文件，统计其中的单词出现的个数。default_filename="./Holmes/THE NAVAL TREATY.TXT"def calculate_words(filename):     words = {}     file = open(filename, 'r')     for word in file.read().split():          if words.has_key(word):               words[word]+= 1;          else:               words[word]=1     return wordsif __name__ == '__main__':     words = calculate_words(default_filename)     print words