import requests
from bs4 import BeautifulSoup
import re

headers = {'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36 Edg/128.0.0.0'   }
# 获取搜索结果页面的内容
def get_search_page(search_url):
    response = requests.get(search_url, headers=headers)
    response.raise_for_status()  # 确保请求成功
    return response.text

# 提取页面中所有视频的链接
def extract_video_links(page_content):
    soup = BeautifulSoup(page_content, 'html.parser')
    video_links = []
    for a_tag in soup.select(".video-list.row div.bili-video-card > div > a"):
        link = a_tag.get('href')
        video_links.append(link)
        
    return video_links

# 提取视频的BV号
def extract__BV(video_url):
    video_id_match = re.search(r'/video/([^/]+)', video_url)
    if video_id_match:
        return video_id_match.group(1)
    return None


# 主函数
def main(search_url):
    page_content = get_search_page(search_url)
    video_links = extract_video_links(page_content)
    bvs = []
    for link in video_links:
        bv = extract__BV(link)
        if bv:
            bvs.append(bv)
    return(bvs)

search_url = 'https://search.bilibili.com/all?keyword=2024巴黎奥运会'
aa = main(search_url)
print(aa)