Python爬虫抓取百度汽车前100张图片

以下是使用Python编写的爬虫程序，可以从百度汽车搜索结果中获取前100张图片：

import requests
from bs4 import BeautifulSoup
import os

def get_image_urls(search_term):
    url = f'https://image.baidu.com/search/index?tn=baiduimage&word={search_term}'
    response = requests.get(url)
    soup = BeautifulSoup(response.text, 'html.parser')
    img_tags = soup.find_all('img', class_='main_img')
    img_urls = [img['src'] for img in img_tags]
    return img_urls[:100]

def download_images(search_term):
    img_urls = get_image_urls(search_term)
    if not os.path.exists(search_term):
        os.makedirs(search_term)
    for i, url in enumerate(img_urls):
        response = requests.get(url)
        file_name = os.path.join(search_term, f'{search_term}_{i}.jpg')
        with open(file_name, 'wb') as f:
            f.write(response.content)
        print(f'Downloaded {file_name}')

if __name__ == '__main__':
    search_term = '汽车'
    download_images(search_term)

该程序首先定义了一个get_image_urls函数，它接受一个搜索词作为参数，并返回前100张相关图片的URL。

然后定义了一个download_images函数，它使用get_image_urls函数获取图片URL，然后下载每个图片并保存到以搜索词为名的文件夹中。

最后，在程序的main函数中，将搜索词设置为“汽车”，并调用download_images函数来下载相关图片。