帮我写一个爬取网页图片的python文件

```python # -*- coding:utf-8 -*- import requests from bs4 import BeautifulSoup # 请求URL url = 'http://www.example.com/' # 替换为自己想要爬取的网页地址 # 得到页面的内容 html = requests.get(url).text # 通过BeautifulSoup来解析我们得到的html，它是一个Python库，处理页面内容的利器。 soup = BeautifulSoup(html, 'lxml') # 通过find_all函数来搜索所有图片标签 img_tags = soup.find_all('img') # 定义图片保存路径 path = '/Users/xxx/Desktop/images' # 改成你自己想要保存图片的文件夹地址 # 如果不存在该路径就创建一个 if not os.path.exists(path): os.makedirs(path) # 获取图片URL并下载图片 for img_tag in img_tags: img_url = img_tag['src'] r = requests.get(img_url, stream=True) image_name = img_url[-9:] with open('{}/{}'.format(path, image_name), 'wb') as f: for chunk in r.iter_content(): f.write(chunk) print('Save Image {}'.format(image_name)) print('Download Successful!') ```