利用beautifulsoup 取图片

# -*- coding: utf-8 -*-
import urllib
from bs4 import BeautifulSoup
local="D:\\PythonPractice\\WebCrawler\\Photo\\"
def get_content(url):
    """doc."""
    html=urllib.urlopen(url)
    content=html.read()
    html.close()
    return content
def get_images(info):
    """
    :param info:
    :return:
    +？匹配一次以上
    .除\n以外的任何字符
    """
    soup=BeautifulSoup(info,"html.parser")
    all_img=soup.find_all('img',class_="BDE_Image")
   # print len(all_img)
    x=1
    for img in all_img:
        urllib.urlretrieve(img['src'], local + '%s.jpg' % (x))
        x+=1


url="http://tieba.baidu.com/p/4481996921"
info =get_content(url)
print get_images(info)