1 def process_file(dst):     # 读文件到缓冲区
 2     try:     # 打开文件
 3         f = open(dst,‘r‘)
 4     except IOError,s:
 5         print s
 6         return None
 7     try:     # 读文件到缓冲区
 8         bvffer = f.read()
 9     except:
10         print "Read File Error!"
11         return None
12     f.close()
13     return bvffer

 1 def process_buffer(bvffer):
 2     if bvffer:
 3         word_freq = {}
 4         # 下面添加处理缓冲区 bvffer代码，统计每个单词的频率，存放在字典word_freq
 5         bvffer.lower()
 6         char={"~@#$%^&*()_-+=<>?/,.:;{}[]|\‘“”"}
 7         for ch in char :    
 8             bvffer=bvffer.replace(ch,‘ ‘)
 9         words=bvffer.strip().split()
10         for word in words:
11             word_freq[word]=word_freq.get(word,0) + 1
12         return word_freq