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'+'\t\t'+'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)

   </pre>