Modified from http://paste.pound-python.org/show/28965/

get_tieba_pic.py

#!/usr/bin/python
# Filename: get_tieba_pic.py

from __future__ import print_function

import os
import re
import sys

if sys.version_info[0] == 2:
    import urllib2
    input = raw_input
else:
    import urllib.request as urllib2

PAGE_LINK = 'http://tieba.baidu.com/p/{post_id}?see_lz=1&pn={page_num}'


def create_folder(post_id):
    dir_name = 'tieba_{}'.format(post_id)
    if not os.path.exists(dir_name):
        os.mkdir(dir_name)
    return dir_name


def http_get(url):
    head = {
        "User-Agent": "Mozilla/5.0 (Windows NT 5.1; rv:19.0) Gecko/20100101 Firefox/19.0",
        "Referer": 'http://www.baidu.com/',
    }
    req = urllib2.Request(url, headers=head)
    try:
        res = urllib2.urlopen(req).read()
    except Exception as e:
        print(e)
    return res


def count_pages(html):
    ptn = r'<span class="red">(.*?)</span>'
    num = re.findall(ptn, html)
    return int(num[0])


def find_pic_urls(html):
    ptn = r'class="BDE_Image".*?sign=.*?/(.*?)"'
    img_urls = re.findall(ptn, html)
    pref = 'http://imgsrc.baidu.com/forum/pic/item/'
    return [pref+l for l in img_urls]


def get_post_id():
    if len(sys.argv) == 1:
        user_input = input('Enter post url --> ')
    else:
        user_input = sys.argv[1]
    ptn = r'^http://tieba.baidu.com/p/(\d+).*?'
    post_id = re.findall(ptn, user_input)[0]
    return post_id


def main():
    post_id = get_post_id()
    html = str(http_get(PAGE_LINK.format(post_id=post_id, page_num=0)))
    pages = count_pages(html)
    pic_urls = find_pic_urls(html)
    if pages > 1:
        for i in range(1, pages):
            pic_urls += find_pic_urls(
                str(http_get(PAGE_LINK.format(post_id=post_id, page_num=i)))
            )
    folder = create_folder(post_id)
    pics = len(pic_urls)
    print('Found {} pictures in {} pages'.format(pics, pages))
    print('Start downloading, pictures will be saved to {}'.format(folder))
    print()
    for i, l in enumerate(pic_urls):
        filename = ('{:0>%dd}.{}' % len(str(pics))).format(i, l.split('.')[-1])
        print('Downloading {} ...'.format(filename))
        data = http_get(l)
        with open('{}/{}'.format(folder, filename), 'wb') as f:
            f.write(data)
    print('Finished!')


if __name__ == "__main__":
    main()