python爬虫小案例_从豆瓣爬取《哪吒之魔童降世》的剧照

一、在豆瓣电影网爬取以下剧照保存到本地：

本次案例只爬取前 5 页的剧照，先获取前五页的链接：

for i in range(5):
    url = 'https://movie.douban.com/subject/26794435/photos?type=S&start='+str(i*30)+'&sortby=like&size=a&subtype=a'    
    print(url)

  由下图可知这些剧照是在 ul 标签下 

 二、爬取和保存到本地的参考代码如下：

# 导入相应的模块
import os
import requests
from bs4 import BeautifulSoup

url_list = []
for i in range(5):
    url = 'https://movie.douban.com/subject/26794435/photos?type=S&start='+str(i*30)+'&sortby=like&size=a&subtype=a'
    url_list.append(url)
    
imag_link = []
for u in url_list:
    txt = requests.get(u).text  # 网页的请求
    soup = BeautifulSoup(txt,'lxml') # 网页的解析
    tags = soup.find('ul',class_='poster-col3 clearfix').find_all('img') # 图片标签的采集
    imag_link.extend(tags)

imgSrc = [x['src']for x in imag_link]  # 图片链接的获取


# 保存图片到本地
n = 0
for s in imgSrc:
    n += 1
    i = requests.get(s)   
    with open('%s.jpg'%n,'wb') as f:
        f.write(i.content)
    

三、可查看已保存下来的图片：