Get data from cdnjs.com and save to json

GetCDNJS.py

#!/usr/bin/python2
import urllib, json
from BeautifulSoup import BeautifulSoup

data = {}
# inconformity
blacklist = ['mathjax', 'yui', 'documentup']
res = urllib.urlopen('https://cdnjs.com/').read()
soup = BeautifulSoup(res)
libs = soup.findAll('tr', attrs={'data-library-name': True})
for lib in libs:
    lib_name = lib['data-library-name']
    if lib_name in blacklist:
        continue
    res = urllib.urlopen('https://cdnjs.com/libraries/' + lib_name).read()
    soup = BeautifulSoup(res)
    vers = soup.findAll('div', attrs={'data-library-version': True})
    _vers = []
    for ver in vers:
        ver_name = ver['data-library-version']
        _vers.append(ver_name)
    links = vers[0].findAll('p', attrs={'class': 'library-url'})
    prefix = 'https://cdnjs.cloudflare.com/ajax/libs/' + lib_name + '/' + _vers[0] + '/'
    items = []
    for link in links:
        items.append(link.string.replace('/','/')[len(prefix):])
    data[lib_name] = {'v': _vers, 'i': items}
with open('/root/qiniu/data.json', 'w') as out:
    json.dump(data, out)