使用Python提取链接时报错，求解答

在使用Python提取网站上所有链接时报错！

代码：

from requests_html import HTMLSession

def get_url(url):
    session = HTMLSession()
    r = session.get(url)
    # 
    return urls

print(get_url(""))

报错信息

Traceback (most recent call last):
  File "script.py", line 5, in 
    from requests_html import HTMLSession
ModuleNotFoundError: No module named 'requests_html'

Exited with error status 1

urls的取值丢失导致的

 
from requests_html import HTMLSession
 
def get_url(url):
    session = HTMLSession()
    r = session.get(url)
    urls = r.html.links
    return urls
 
print(get_url(""))

望采纳！