小脚本很简单,主要是练习一下正则匹配,与简单的urllib库的应用

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#coding: utf8
import urllib,re
import os

def getLastinstall():

page = urllib.urlopen(r'http://sd.360.cn/download_center.html')
html = page.read()
page.close()
rematch = r'http://down.360.cn/360sd/360sd_se_(.*?)exe'
replusmatch = r'http://down.360.cn/360sd/360sd_plus_(.*?)exe'
stdname = '360sd_'+(str(re.compile(rematch).findall(html)[0]))+'exe'
downurlstd = r'http://down.360.cn/360sd/360sd_'+(str(re.compile(rematch).findall(html)[0]))+'exe'
powname = '360sd_plus_'+(str(re.compile(replusmatch).findall(html)[0]))+'exe'
downurlpow = r'http://down.360.cn/360sd/360sd_plus_'+(str(re.compile(replusmatch).findall(html)[0]))+'exe'
localpath = os.getcwd()+r'/installpack'
if not (os.path.isfile(stdname) and os.path.isfile(powname)):
if not os.path.isdir('installpack'):
os.makedirs('installpack')
urllib.urlretrieve(downurlstd,localpath+'/'+stdname)
urllib.urlretrieve(downurlpow,localpath+'/'+powname)
else:
print '目录中已经是线上最新版杀毒安装程序'

if __name__ =='__main__':
getLastinstall()