壁纸网址：https://bing.ioliu.cn/ranking，爬取的是排行榜上的壁纸

源码:

import bs4,re,os,requests

session = requests.session()

headers = {

"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:63.0) Gecko/20100101 Firefox/63.0"}

def fetch_content(url): # 获取任意网页内容，并用 beautifulsoup 格式化

req = session.get(url,headers = headers)

htmls = req.text

soup = bs4.BeautifulSoup(htmls,features = 'lxml')

return soup

print('此程序会从必应壁纸网站下载壁纸，并将壁纸保存在 D:\必应壁纸 目录下。')

s = input('键入任意键键开始，否则直接关闭程序:')

flag = False

if s != None:

flag = True

if flag:

print("目录已存在")

else:

os.mkdir('D:\必应壁纸')

print('目录创建成功')

k = 1

p = input('请输入要下载的页数（每页12张，建议不超过10页）:')

child_flag = False

if p.isdigit() == True:

child_flag = True

if child_flag:

while k

url = 'https://bing.ioliu.cn/ranking?p=' + str(k) # p=6 即获取第六页的内容

soup = fetch_content(url)

description = soup.find_all(class_='description')

# 获取图片标题

for i in range(len(pic_url)):

title = description[i].h3.string

name = ''.join(re.findall('([\s\S]*?)\W',title))

print('正在下载:\t', name) # 打印图片所属子页面以及图片标题

img = 'https://bing.ioliu.cn' + pic_url[i].get('href')[:-9] + 'download'

img = session.get(img,proxies = {'http':'120.78.199.148'},headers = headers) # 下载

try:

if os.path.exists('D:/必应壁纸/' + name + '.jpg') == False:

with open('D:/必应壁纸/' + name + '.jpg','wb') as f:

f.write(img.content)

else:

pass

except:

pass

print('第%s页：%s张下载完成!'%(k,i + 1))

k += 1

print('%s页%s张全部下载完成！'%(int(p),int(p) * 12))

else:

print('请输入数字！')

exit('程序发生错误！')

else:

exit('程序发生错误！')