My cat's eye small white climbed out top100 problem, please give directions!-CodePudding

Just began to learn the crawler, online to see another climb took the cat's eye top100 instance, follow suit, but the result of the crawl is' [] ', looked at the web pages returned, not done in the source code, have mentioned validation

, could you tell me how to solve it

The source code is as follows:

 
The import requests 
The from requests. Exceptions import RequestException 
The import re 

Headers={' the user-agent ':' Mozilla/5.0 (Windows NT 10.0; Win64. X64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36 '} 

Def get_one_page (url) : 
Try: 
The response=requests. Get (url, headers=headers) 
If the response. Status_code==200: 
Return the response. The text 
Return None 
Except RequestException: 
Return None 

Def parse_one_page (HTML) : 
The pattern=re.com running (' & lt; Dd> . *? Board - index. *?> (\ d +) & lt;/i> . *? Data - SRC="https://bbs.csdn.net/topics/(. *?) ". *? The name "& gt; + '. *?> (. *?)  . *? Star "& gt; (. *?) 
 . *? Releasetime & gt; "" (. *?) 
 '
+ '. *? The integer "& gt; (. *?)  . *? Fraction "& gt; (. *?)  . *?  're. S) 
The items=re. The.findall (pattern, HTML) 
Print (items) 

Def the main () : 
Url="https://maoyan.com/board/4?" 
HTML=get_one_page (url) 
Parse_one_page (HTML) 

If __name__=="__main__ ': 
The main ()