本文实例讲述了python提取页面内url列表的方法。分享给大家供大家参考。具体实现方法如下:
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from bs4 import BeautifulSoup import time,re,urllib2 t = time.time() websiteurls = {} def scanpage(url): websiteurl = url t = time.time() n = 0 html = urllib2.urlopen(websiteurl).read() soup = BeautifulSoup(html) pageurls = [] Upageurls = {} pageurls = soup.find_all( "a" ,href = True ) for links in pageurls: if websiteurl in links.get( "href" ) and links.get( "href" ) not in Upageurls and links.get( "href" ) not in websiteurls: Upageurls[links.get( "href" )] = 0 for links in Upageurls.keys(): try : urllib2.urlopen(links).getcode() except : print "connect failed" else : t2 = time.time() Upageurls[links] = urllib2.urlopen(links).getcode() print n, print links, print Upageurls[links] t1 = time.time() print t1 - t2 n + = 1 print ( "total is " + repr (n) + " links" ) print time.time() - t scanpage( "http://news.163.com/" ) |
希望本文所述对大家的Python程序设计有所帮助。