python中多图片爬虫保存在本地磁盘
时间: 2024-10-10 13:11:41 浏览: 54
在Python中编写一个多图片爬虫并将其保存在本地磁盘,通常涉及到网络请求库(如requests)、HTML解析库(如BeautifulSoup)以及文件操作(os模块)。以下是一个简化的步骤说明:
1. 导入必要的库:
```python
import requests
from bs4 import BeautifulSoup
import os
```
2. 定义目标URL,发起HTTP请求获取网页内容:
```python
url = "http://example.com/images" # 替换为你需要爬取图片的网站地址
response = requests.get(url)
```
3. 解析网页以提取图片链接:
```python
soup = BeautifulSoup(response.text, 'html.parser')
image_links = [img['src'] for img in soup.find_all('img', src=True)]
```
这里假设图片链接都在`<img>`标签的`src`属性中。
4. 检查目录是否存在,如果不存在则创建:
```python
target_dir = 'images_from_web' # 目标文件夹路径
if not os.path.exists(target_dir):
os.makedirs(target_dir)
```
5. 逐个下载图片并保存至本地:
```python
for link in image_links:
response_img = requests.get(link, stream=True)
filename = os.path.join(target_dir, link.split('/')[-1])
with open(filename, 'wb') as f:
for chunk in response_img.iter_content(chunk_size=1024):
if chunk: # filter out keep-alive new chunks
f.write(chunk)
```
这会下载每个图片链接,并将其保存在指定的目标目录下。
6. 爬虫结束,记得处理可能出现的异常。
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