python 根据网易云歌曲的ID 直接下载歌曲的实例

 import requests,os,time,sys,re from scrapy.selector import Selector class wangyiyun(): def __init__(self): self.headers = { 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36', 'Referer': 'http://music.163.com/'} self.main_url='http://music.163.com/' self.session = requests.Session() self.session.headers=self.headers def get_songurls(self,playlist): '''进入所选歌单页面，得出歌单里每首歌各自的ID 形式就是“song?id=64006"''' url=self.main_url+'playlist?id=%d'% playlist re= self.session.get(url)  #直接用session进入网页，懒得构造了 sel=Selector(text=re.text)  #用scrapy的Selector，懒得用BS4了 songurls=sel.xpath('//ul[@class="f-hide"]/li/a/@href').extract() return songurls  #所有歌曲组成的list ##['/song?id=64006', '/song?id=63959', '/song?id=25642714', '/song?id=63914', '/song?id=4878122', '/song?id=63650'] def get_songinfo(self,songurl): '''根据songid进入每首歌信息的网址，得到歌曲的信息 return：'64006'，'陈小春-失恋王''' url=self.main_url+songurl re=self.session.get(url) sel=Selector(text=re.text) song_id = url.split('=')[1] song_name = sel.xpath("//em[@class='f-ff2']/text()").extract_first() singer= '&'.join(sel.xpath("//p[@class='des s-fc4']/span/a/text()").extract()) songname=singer+'-'+song_name return str(song_id),songname def download_song(self, songurl, dir_path): '''根据歌曲url，下载mp3文件''' song_id, songname = self.get_songinfo(songurl) # 根据歌曲url得出ID、歌名 song_url = 'http://music.163.com/song/media/outer/url?id=%s.mp3'%song_id path = dir_path + os.sep + songname + '.mp3' # 文件路径 requests.urlretrieve(song_url, path) # 下载文件 def work(self, playlist): songurls = self.get_songurls(playlist) # 输入歌单编号，得到歌单所有歌曲的url dir_path = r'C:\Users\Administrato<mark style="color:transparent">来源gaodaimacom搞#^代%!码&网</mark>r\Desktop' for songurl in songurls: self.download_song(songurl, dir_path) # 下载歌曲 if __name__ == '__main__': d = wangyiyun() d.work(2214059025)