Python下载懒人图库JavaScript特效

这是一个简单的Python脚本，主要从懒人图库下载JavaScript特效模板，在脚本中使用了gevent这个第三方库，使用的时候需要先安装。

    #!/usr/bin/python
    # -*- coding: utf-8 -*-

    import urllib,os,sys
    import gevent,re
    from gevent import monkey
    from bs4 import BeautifulSoup
    gevent.monkey.patch_socket()

    '''
    Description：Python 爬虫抓取懒人图库的JS脚本模板
    Author：admin
    Create-Date：2015-05-25
    Version：1.0
    '''

    HTTP_URL = 'http://www.lanrentuku.com%s'
    DOWNLOAD_URL = HTTP_URL[:-2] + '/js/d%szip'
    reg=r'\d{1,}\.+'

    def encode(text):
      return text.encode("utf8")

    def createDirectory(curPath):
      myPath = os.path.join(getSubDirectory(), u'JS代码模板')
      if not os.path.exists(myPath):
        os.mkdir(myPath)
      return os.path.join(myPath, curPath)

    def getSubDirectory():
      return os.getcwd()

    def schedule(a, b, c): 
      per = 100.0 * a * b / c
      if per > 100 :
        per = 100
      sys.stdout.write('%.1f%%\r' % per)
      sys.stdout.flush()

    def geturllist(url):
      url_list = {}
      html = urllib.urlopen(url)
      content = html.read()
      html.close()
      # 用BeautifulSoup解析
      decodeHtml = BeautifulSoup(content)
      try:
        aTags = decodeHtml.find_all('div', {'class':'list-pngjs'})[0].find_all('a')
      except IndexError, e:
        print e
        aTags = None
      # 获取链接地址和标题
      if aTags is not None:
        for a_tag in aTags:
          url_list[HTTP_URL % a_tag.get('href')] = a_tag.get_text()
      return url_list

    def download(down_url):
      try:
        m=re.search(reg,down_url[0])
        name = DOWNLOAD_URL % m.group(0)
        urllib.urlretrieve(name,createDirectory(down_url[1] + name[-4:]),schedule)
      except Exception, e:
        print e.message

    def getpageurl(xUrl):
      # 进行列表页循环
      return [xUrl % page for page in xrange(1,49)]

    if __name__ == '__main__':
      jobs = []
      pageurl = getpageurl('http://www.lanrentuku.com/js/p%s.html')
      # 爬取所有链接
      for i in pageurl:
        for k in geturllist(i).items():
          jobs.append(gevent.spawn(download, k))
      gevent.joinall(jobs)

以上所述就是本文的全部内容了，希望大家能够喜欢。