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"""
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说明：爬取b站视频的bv号，为之后获取弹幕做好准备
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"""
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import requests
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import re #使用re解析
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BV_NUM = 300 # 定义需要的视频数量
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Search_Content = "2024巴黎奥运会" #定义搜索内容
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header = {
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"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",
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"referer":'https:"//search.bilibili.com/all?"'
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}
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def get_bv(num):
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"""
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爬取指定内容，指定视频数量的bv号
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:param num:
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:return: bv_list
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"""
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bv_list = set([]) #用set()实现去重
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page = 1
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while (True):
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main_page_url = f"https://search.bilibili.com/all?keyword={Search_Content}&page={page}" #搜索主页面url
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resp = requests.get(main_page_url, headers=header)
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# print(resp.text)
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obj = re.compile(r'aid:.*?bvid:"(?P<bvs>.*?)",') # 获取视频的BVID用于获取弹幕
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its = obj.finditer(resp.text)
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for it in its:
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bv_list.add(it.group("bvs"))
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if len(bv_list) >= num:
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return bv_list #到达指定视频数量后退出
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page += 1
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if __name__ == '__main__':
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bv_list = get_bv(BV_NUM)
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print(bv_list)
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