如何使用python爬取网页图片

您可以使用Python中的第三方库requests和beautifulsoup4来爬取网页图片。具体步骤如下：

1.导入requests和beautifulsoup4库

import requests
from bs4 import BeautifulSoup

2.设置请求头信息

headers = {
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3'}

3.发送请求获取网页内容

url = 'http://www.example.com'
response = requests.get(url, headers=headers)

4.解析网页内容获取图片链接

soup = BeautifulSoup(response.content, 'html.parser')
img_tags = soup.find_all('img')
urls = [img['src'] for img in img_tags]

5.下载图片

for url in urls:
    response = requests.get(url, headers=headers)
    with open('image_name.jpg', 'wb') as f:
        f.write(response.content)

其中，'image_name'为你想要保存的图片名字。