python 爬虫用于搜索QQ音乐

 import requests

    
  
    
 w = input('请输入歌手：')
    
  
    
 i = 1
    
  
    
 # 首先清空txt
    
 with open(r'song.txt', 'a') as f:
    
     # 清空文件
    
     f.truncate(0)
    
     f.close()
    
  
    
 while True:
    
     print('%s页爬取中……' % i)
    
     url = 'https://c.y.qq.com/soso/fcgi-bin/client_search_cp?ct=24&qqmusic_ver=1298&new_json=1&remoteplace=txt.' \
    
       'yqq.song&searchid=71285779863586018&t=0&aggr=1&cr=1&catZhida=1&lossless=0&flag_qc=0&p=%s&n=20&w=%s&g_' \
    
       'tk=5381&loginUin=0&hostUin=0&format=json&inCharset=utf8&outCharset=utf-8&notice=0&platfor