python crawler: crawl QQ music songs

describe

You can download QQ Music free music and Green Diamond music, but you cannot download paid music.
After running the program, a folder named: Song Download will be automatically created in the same directory. The downloaded file will be placed in this folder.
If the size of the downloaded file is 1KB, it means that the download failed and this song does not support downloading.

The source code is as follows:

# -*- coding: utf-8 -*-
import json
import os
import requests

headers = {
    
    
    'Origin': 'https://y.qq.com',
    'Referer': 'https://y.qq.com/portal/search.html',
    'Sec-Fetch-Mode': 'cors',
    'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.90 Safari/537.36'
}


def get_music_info():
    music_info_list = []
    name = input('请输入歌手或歌曲：')  # input函数 输入 做用户交互 使用的
    page = input('请输入页码：')
    num = input('请输入当前页码需要返回的数据条数：')
    url = f'https://c.y.qq.com/soso/fcgi-bin/client_search_cp?p={page}&n={num}&w={name}'
    response = requests.get(url).text  # 获取到的是字符串
    # 将response切分成json格式 类似字典 但是现在还是字符串
    music_json = response[9:-1]
    # json转字典
    music_data = json.loads(music_json)  # 转换成 字典
    # print(music_data)
    music_list = music_data['data']['song']['list']
    for music in music_list:
        music_name = music['songname']  # 歌曲的名字
        singer_name = music['singer'][0]['name']  # 歌手的名字
        songmid = music['songmid']
        media_mid = music['media_mid']
        music_info_list.append((music_name, singer_name, songmid, media_mid))
    return music_info_list


# 获取vkey
def get_purl(music_info_list):
    music_data = []
    for music in music_info_list:
        music_name = music[0]
        singer_name = music[1]
        songmid = music[2]
        url = 'https://u.y.qq.com/cgi-bin/musicu.fcg?data={"req":{"module":"CDN.SrfCdnDispatchServer","method":"GetCdnDispatch","param":{"guid":"8846039534","calltype":0,"userip":""}},"req_0":{"module":"vkey.GetVkeyServer","method":"CgiGetVkey","param":{"guid":"8846039534","songmid":["%s"],"songtype":[0],"uin":"1152921504784213523","loginflag":1,"platform":"20"}},"comm":{"uin":"1152921504784213523","format":"json","ct":24,"cv":0}}' % songmid
        response = requests.get(url).json()  # 如果你获取的数据 是 {}  .json() 他会直接帮我们转换成字典
        purl = response['req_0']['data']['midurlinfo'][0]['purl']
        full_media_url = 'http://dl.stream.qqmusic.qq.com/' + purl
        music_data.append(
            {
    
    
                'music_name': music_name,
                'singer_name': singer_name,
                'full_media_url': full_media_url
            }
        )
    return music_data


def save_music_mp3(music_data):
    if not os.path.exists('歌曲下载'):  # 判断是否有歌曲下载文件夹
        os.mkdir('歌曲下载')  # 如果没有创建 歌曲下载文件夹
    for music in music_data:
        music_name = music['music_name']
        singer_name = music['singer_name']
        full_url = music['full_media_url']
        music_response = requests.get(full_url, headers=headers).content
        with open('歌曲下载/%s-%s.mp3' % (music_name, singer_name), 'wb')as fp:
            fp.write(music_response)
            print('[%s]保存成功！' % music_name)


if __name__ == '__main__':
    music_info_list = get_music_info()
    music_data = get_purl(music_info_list)
    save_music_mp3(music_data)

operation result: