import requestsfrom bs4 import BeautifulSoupimport urllibdef download_imageurl filename response = requestsgeturl stream=True with openfilename wb as file for chunk in responseiter_conten

要更改代码以获取你想要的图片，你需要检查网页的HTML结构并找到包含你想要的图片的元素。然后，你可以使用BeautifulSoup库中的相应方法来提取这些元素。

以下是修改后的代码示例：

import requests
from bs4 import BeautifulSoup
import urllib

def download_image(url, filename):
    response = requests.get(url, stream=True)
    with open(filename, 'wb') as file:
        for chunk in response.iter_content(1024):
            file.write(chunk)

def scrape_images(url):
    response = requests.get(url)
    soup = BeautifulSoup(response.content, 'html.parser')
    image_tags = soup.find_all('img')
    for img in image_tags:
        img_url = img.get('src')
        if img_url:
            if 'your_desired_image_keyword' in img_url:  # 替换为你想要的图片的关键字或URL片段
                filename = img_url.split('/')[-1]
                try:
                    print(f"Downloading image: {filename}")
                    download_image(img_url, filename)
                except:
                    print(f"Failed to download image: {filename}")

if __name__ == '__main__':
    url = 'https://wallspic.com/cn'
    scrape_images(url)

在上述代码中，你需要将your_desired_image_keyword替换为你想要的图片的关键字或URL片段。这将确保只下载包含该关键字的图片。