I was trying to use beautifulsoup4 with python to scrape a certain website. However, when I tried to see contents from the URL, it only gives me a header part and doesn't give me a body part that I want to use.

```
URL = "url"
URL_page = requests.get(URL)
print(URL_page.text)

```

this gives me 

```
<!DOCTYPE html>
<html>
 <head>
"Contents of Header"
 </head>
  <body>
   <div id='root'></div>
  </body>
</html>

```

there should be contents inside the body tag but it shows nothing.
the original html of this web page is looks like

```
<html xmlns:wb="http://open.weibo.com/wb" style> 
 ▶<head...</head>                     ← ONLY GIVES ME THIS
 ▶<body data-loaded="true">...</body> ← I NEED THIS PART
</html>

```