完整代码

import re
import os
import requests
'''
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'''
# 爬取主页面：http://www.27270.com/ent/meinvtupian/

# 下载图片函数
'''
folder_name : 文件夹名称，按图片简介
picture_address ： 一组图片的链接
'''
def download_pictures(folder_name, picture_address):
    file_path = r'G:\Beautiful\{0}'.format(folder_name)
    if not os.path.exists(file_path):
        # 新建一个文件夹
        os.mkdir(os.path.join(r'G:\Beautiful', folder_name))
    # 下载图片保存到新建文件夹
    for i in range(len(picture_address)):
        # 下载文件（wb,以二进制格式写入）
        with open(r'G:\Beautiful\{0}\0{1}.jpg'.format(folder_name,i+1), 'wb') as f:
            # 根据下载链接，发送请求，下载图片
            response = requests.get(picture_address[i][0])
            f.write(response.content)



# 1. 发送http请求，获取主页面内容
r_url = 'http://www.27270.com/ent/meinvtupian/'
html_code = requests.get(r_url)
# 2. 设置页面编码为 gb2312
html_code.encoding = 'gb2312'
html_text = html_code.text
# print(html_text)

# 3. 从主页面提取出所有图片组简介及图片组的链接
# pattern = r'<a href="(.*?)" title=".*?" class="MMPic" target="_blank"><i><img src=".*?" width="190" height="280" alt=".*?"  /></i></a>'

# 3.1 获取链接
pattern01 = r'<a href="(.*?)" title=".*?" class="tit" target="_blank">.*?</a> <span><u><a href="http://www.27270.com/ent/meinvtupian/" title="美女图片">美女图片</a>'
beautiful_url = re.findall(pattern01, html_text)
# print(beautiful_url)
print(len(beautiful_url))
# 3.2 获取简介
pattern02 = r'<a href=".*?" title=".*?" class="MMPic" target="_blank"><i><img src=".*?" width="190" height="280" alt="(.*?)"  /></i></a>'
beautiful_words = re.findall(pattern02, html_text)
# print(beautiful_words)
print(len(beautiful_words))
# len(beautiful_url)
for i in range(len(beautiful_url)):
    # 4.1 请求单个页面
    picture_codes = requests.get(beautiful_url[i])
    picture_codes.encoding = 'gb2312'
    picture_words = picture_codes.text
    picture_address = []
    # 4.2 在页面中找到图片url
    # print(picture_words)
    pattern03 = r'<img alt="%s"  src="(.*?)" />'%beautiful_words[i]
    picture_01 = re.findall(pattern03, picture_words)
    picture_address.append(picture_01)
    # 4.3 翻页爬取
    # 4.3.1 获取翻页链接
    pattern04 = r"<li><a href='(.*?)'>.*?</a></li>"
    pictures_url = re.findall(pattern04, picture_words)
    print(pictures_url)
    print(pattern03)
    # 4.3.2 翻页，获取图片地址
    for j in range(len(pictures_url)):
        other_picture_url = r'http://www.27270.com/ent/meinvtupian/2018/{0}'.format(pictures_url[j])
        pictures_codes = requests.get(other_picture_url)
        pictures_codes.encoding = 'gb2312'
        pictures_words = pictures_codes.text
        picture_02 = re.findall(pattern03, pictures_words)
        picture_address.append(picture_02)
    print(picture_address)
    download_pictures(beautiful_words[i],picture_address)