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。