picurl

from lxml import etree
import  requests
def getHtml(html):
    novelcontent = requests.get(html).content
    return etree.HTML(novelcontent)

source = getHtml("http://www.cabintu.com")

urllist = source.xpath('//li[@class="airline"]/a')
for i in urllist:
    url = i.attrib['href']
    sources = getHtml(url)
    picurl = sources.xpath('//img[@class="plane"]')

    for j in picurl:
        urls = j.attrib['src']
        print urls

'''
listclassify = source.xpath('//ul[@class="sg_menu"]/li/a')
listtype = source.xpath('//div[@class="mainleft"]/ul[@class="sg_menu"]/li[@class="section"]/ul[@class="subnav_a"]/li[@class="airline"]/a')

fname = source.xpath('//div[@class="mainleft"]/ul[@class="sg_menu"]/li[@class="section"]/a/text()')
for a in fname:
    print a

typelist = source.xpath('//div[@class="mainleft"]/ul[@class="sg_menu"]/li[@class="section"]//ul[@class="subnav_a"]/li[@class="airline"]/a/text()')
for b in typelist:
    print b
'''