如何使用reddit json只选择图片？

import requests
import json

def get_reddit_images(subreddit, limit=10):
    headers = {
        'User-Agent': 'Mozilla/5.0 (compatible; RedditImageScraper/1.0; +http://example.com)'
    }
    url = f'https://www.reddit.com/r/{subreddit}/new.json?limit={limit}'
    
    response = requests.get(url, headers=headers)
    if response.status_code != 200:
        print(f"Failed to fetch data: {response.status_code}")
        return []
    
    data = response.json()
    images = []
    
    for post in data['data']['children']:
        post_data = post['data']
        if post_data['post_hint'] == 'image':
            images.append(post_data['url'])
    
    return images

# 使用示例
subreddit_name = 'pics'
image_urls = get_reddit_images(subreddit_name)
for url in image_urls:
    print(url)