python定时器爬取豆瓣音乐Top榜歌名

#coding=utf-8  
  
import urllib    
import urllib2    
import re    
import time   
  
  
  
def SaveTop20Music(currtime):  
    rex=r'<a href="javascript:;">(.*?)</a>';  
    url = 'http://music.douban.com/chart';  
    Response = urllib2.urlopen(url);  
    Html=Response.read();  
    listsofsong = re.findall(rex,Html);  
    print len(listsofsong);  
    f=open('%s.txt' % currtime,'w');  
    x=1;  
    for line in listsofsong:  
        f.write('top'+str(x)+':'+line);  
        f.write('n');  
        x=x+1;  
        f.flush();  
          
          
    f.close();  
    print currtime+'.txt'+'tt'+'SaveOver'  
      
      
      
def timer(n):    
    while True:    
        currtime = time.strftime("Savetime_%H-%M-%S",time.localtime())   
        print currtime  
        SaveTop20Music(currtime)   
        time.sleep(n)   
  
  
  
if __name__ == "__main__":    
    timer(5)