This code is a snippet from my project, which downloads music from Yandex.Music

YandexMusicDownload.py

from tqdm import tqdm
import os
import requests
import pprint
import hashlib
import base64

# for xml parsing
import xml.etree.ElementTree as ET

track_url = 'https://music.yandex.ru/album/18903866/track/87442509'
token = ''  # AQAAAAAu

# how to get token:
# https://github.com/MarshalX/yandex-music-api/discussions/513#discussioncomment-2729781

track_id = track_url.split('/')[-1] # get track id from url

url = f"https://api.music.yandex.net/tracks/{track_id}/download-info"
headers = {
    'Authorization': f'OAuth {token}',
}

session = requests.Session()
response = session.request("GET", url, headers=headers).json()

if 'result' in response:
    result = filter(lambda i: i['codec'] == "mp3", response['result'])
    best = max(result, key=lambda i: i['bitrateInKbps'])  # get best quality
    url = best['downloadInfoUrl']
else:
    print('error')
    exit()


def parseTrackDownloadInfoXML(path):
    xml = session.get(path)
    if '401 Authorization Required' in xml.text:
        print('auth error')
        return False
    root = ET.fromstring(xml.text)
    host = root.find('host').text
    path = root.find('path').text
    ts = root.find('ts').text
    s = root.find('s').text

    # get sign variable as follows:
    # https://github.com/kontsevoye/ym-api/blob/d74fc2c23007f03f0aaff03d14cae8c50d0919e7/src/YMApi.ts#L423-L437
    sign = 'XGRlBW9FXlekgbPrRHuSiA' + path[1:] + s
    sign = hashlib.md5(sign.encode('utf-8')).hexdigest()
    return f'https://{host}/get-mp3/{sign}/{ts}{path}'


def download(url, filename):
    r = session.get(url, stream=True)
    total_length = int(r.headers.get('content-length'))
    with open(filename, 'wb') as f:
        for chunk in tqdm(r.iter_content(chunk_size=1024), total=total_length/1024, unit='KB'):
            if chunk:
                f.write(chunk)
                f.flush()


url = parseTrackDownloadInfoXML(url)

if url:
    print(url)
    download(url, 'test.mp3')