爬虫数据存入CSV时报错：字符串对象没有关键字属性，可是类型查询结果又是字典对象啊，是什么原因？

Question

从网页提取出来的信息就是字典类型：content={'aid': 96393562, 'title': '【幼月的镜头工坊】女王：我想要的，就会是我的【7Rings】', 'tname': 'MMD·3D'} 但是在第三步保存数据到CSV的的时候就要报错，说'str' object has no attribute 'keys'，怎么处理呢？

    class BiliBili:

    # 第一步：爬取目链接
    def get_json(self, av_num):
        fake = Factory().create()
        headers = {'User-Agent': fake.user_agent()}
        url = ('https://api.bilibili.com/x/web-interface/view?aid={}'.format(av_num))
        response = requests.get(url, headers=headers)

        self.parse_json(response)

    # 第二步：解析页面提取关键信息
    def parse_json(self, response):
        html = json.loads(response.text)
        content = {"aid": html["data"]["aid"], "title": html["data"]["title"], "tname": html["data"]["tname"]}
        self.save_content(content)

       # 第三步：保存数据
    def save_content(self, content):
    with open('B站视频信息.csv', 'w', newline="", encoding='utf-8') as f:
    writer = csv.DictWriter(f, content.keys())
    writer.writeheader()
    writer.writerows(content)

    # 第四步：遍历url
    def main(self, start_av_num, end_av_num):
        for av_num in range(start_av_num, end_av_num+1):
            self.get_json(av_num)

    #    执行函数
    def main():
            p = BiliBili()
            p.main(96393562, 96393562)

    if __name__ == '__main__':
            main()

Answer 1

改成这样试试

writer = csv.DictWriter(f, [k for k in content])