抖音无水印解析 Python

import requests
import re
import os

headers = {
    'User-Agent': 'User-Agent", "Mozilla/5.0 (iPhone; CPU iPhone OS 12_1_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/16D57 Version/12.0 Safari/604.1',
}


class Douyin:
    def __init__(self, url):
        '''
        数据初始化
        :param url:
        '''
        self.url = url
        # self.item_ids = ''
        # self.dytk = ''

    def info(self):
        '''
        获取item_ids和dytk参数
        :return: [item_ids,dytk]
        '''
        url = self.url
        response = requests.get(url, headers=headers)
        now_url = response.url
        pat_item_ids = '/video/(.*?)/'
        self.item_ids = re.compile(pat_item_ids, re.S).findall(now_url)
        pat_dytk = 'dytk: "(.*?)"'
        self.dytk = re.compile(pat_dytk, re.S).findall(response.text)
        print(self.item_ids, self.dytk)
        return [self.item_ids[0], self.dytk[0]]

    def video(self):
        '''
        获取无水印视频链接和视频描述
        :return: true_url
        '''
        Douyin.info(self)
        url = 'https://www.iesdouyin.com/web/api/v2/aweme/iteminfo/'
        params = {
            'item_ids': self.item_ids,
            'dytk': self.dytk
        }
        response = requests.get(url, headers=headers, params=params).json()
        self.true_url = response['item_list'][0]['video']['play_addr']['url_list'][0]
        self.des = response['item_list'][0]['desc']
        print(self.true_url, self.des)
        return [self.true_url, self.des]

    def download(self):
        '''
        下载视频
        :return:
        '''
        Douyin.video(self)
        response = requests.get(self.true_url, headers=headers).content
        if os.path.exists('video') == False:
            os.mkdir('video')
        with open('video/' + self.des + '.mp4', mode='wb') as f:
            f.write(response)


# 主程序
if __name__ == '__main__':
    a = Douyin('https://v.douyin.com/38JgQ3/')
    a.download()