url = "https://music.163.com/#/discover/toplist?id=3779629" # 新歌榜

driver = webdriver.Chrome()

driver.get(url)

time.sleep(3)

_iframe = driver.find_element_by_id('g_iframe') # 找到iframe标签

driver.switch_to.frame(_iframe)

time.sleep(1)

page_text = driver.execute_script("return document.documentElement.outerHTML")

html = etree.HTML(page_text)

trs = html.xpath('//tr')
id_list = []
song_name_list = []
singer_list = []

for tr in trs[1:]:
    id = tr.xpath("./td[2]/div[1]/div[1]/span/@data-res-id")[0][-10:] # 
    id_list.append(id)
    song_name = tr.xpath("./td[2]/div/div/div/span/a/b/@title")[0]
    song_name_list.append(song_name)
    print(id,"----",song_name)

base_url = 'http://music.163.com/song/media/outer/url?id={}.mp3'
try:
    for index,id in enumerate(id_list):
        if index == 25: # 因为这个26首歌曲名非正常字符,要排除,否则报错
            continue
        file_name = song_name_list[index]
        resp = requests.get(base_url.format(id))
        with open(r'HotMusic/'+ file_name + '.mp3','wb') as f:
            f.write(resp.content)
            print('歌曲:%s下载成功' % file_name)
except Exception as error:
    print(error)