python HTTP协议爬取爆米花视频

给大家分享一点代码，爬取小视频
代码如下：

def get_part(self, url):
        headers = {
        #这个取决于你依托哪个浏览器访问http
            "User-Agent": "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36"}
        try:
            response = requests.get(url, headers=headers)
            if response.status_code == 200:
                return response.text
            return None
        except Exception as e:
            print(e)
            return None

def parse_part_1(self, html):
        try:
            pattern = re.compile('.*?var flvid = (.*?);.*?', re.S)
            result_1 = re.search(pattern, html).group(1)
            print('flvid为:' + result_1)
            return result_1
        except Exception:
            print('flvid解析失败')
            return False

def parse_part_2(self, html):
        try:
            pattern = re.compile('.*?&host_480=(.*?)&.*?&dir=(.*?)&.*?', re.S)
            result_2 = re.search(pattern, html).group(1)
            result_3 = re.search(pattern, html).group(2)
            result = result_2 + '/' + result_3
            print('第一部分URL:' + result)
            return result
        except Exception:
            print('解析第一部分URL失败')

def parse_part_3(self, html):
        try:
            pattern = re.compile('.*?&stream_name=(.*?)&.*?', re.S)
            result_4 = re.search(pattern, html).group(1)
            print('第二部分URL:' + '/' + result_4 + '.mp4')
            return result_4
        except Exception:
            print('解析第二部分URL失败')

def download_video(self, url, timeout):
        headers = {
            #这个取决于你依托哪个浏览器访问http
            "User-Agent": "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36"}
        file_path = 'D:/workspace/Base_Project_DT/test.mp4'
        print('开始下载视频:' + url)
        #当时我是异步下载，监控速率，忽视
        print('设置速率监测时间为%ds' % timeout)
        current_time = time.time()
        if os.path.exists(file_path):
            print('删除已经存在的视频')
            os.remove(file_path)
        # 在测试路线上反复下载视频
        while int(time.time()) - current_time <= timeout:
            try:
                response = requests.get(url, headers=headers)
                data = response.content
                with open(file_path, 'wb')as f:
                    f.write(data)
                    f.flush()
                    f.close()
            except Exception:
                print('视频下载失败')

        print('文件为:' + file_path)
        print('视频下载成功:' + url)


def main(self, url, timeout):
        try:
            print('视频初始URL:' + url)
            html = get_part(self, url)
            if html:
                flvid = parse_part_1(self, html)
                if flvid:
                    url = 'http://play.baomihua.com/getvideourl.aspx?qudaoid=42&devicetype=pc%5Fplayer&flvid={}&Resolution=1'.format(
                        flvid)
                    html = get_part(self, url)
                    if html:
                        base_url_1 = parse_part_2(self, html)
                        url = 'http://play.baomihua.com/getvideourl.aspx?flvid={}&devicetype=phone_app_Android'.format(
                            flvid)
                        html = get_part(self, url)
                        if html:
                            base_url_2 = parse_part_3(self, html)
                            url = 'http://' + base_url_1 + '/' + base_url_2 + '.mp4'
                            print('视频下载URL:' + url)
                            download_video(self, url, timeout)
        except Exception:
            print('解析视频地址失败')


def downMedia(self, timeout):
        print('温馨提醒：e.g. http://www.baomihua.com/xxx/xxx' + '、' + 'http://video.baomihua.com/v/xxx' + '...')
        # url传入图片中地址就行，你想爬取哪个传入哪个链接
        url = ''
        main(self, url, timeout)
        return None

当然，你可以改造下，加入循环下载多个视频，监控下载速率，测试产品网络性能；此外，还有些爬取腾讯VIP视频的方法，有时间再给大家分享！
备注：爆米花视频网站，直接在百度上搜索即可