请教用 BeautifulSoup 包抓取链接的问题

下面的代码，用于搜索维基百科上凯文·贝肯词条里所有指向其他词条的链接。
搜索结果中那些指向其它词条页面的链接应具有如下特点：
• 它们都在 id 是 bodyContent 的 div 标签里
• URL 链接不包含分号
• URL 链接都以 /wiki/ 开头

代码如下：

from urllib.request import urlopen 
from bs4 import BeautifulSoup 
import datetime 
import random 
import re 
random.seed(datetime.datetime.now()) 
def getLinks(articleUrl): 
        html = urlopen(" https://en.wikipedia.org "+articleUrl) 
        bsObj = BeautifulSoup(html) 
        return bsObj.find("div", {"id":"bodyContent"}).findAll("a",href=re.compile("^(/wiki/)((?!:).)*$")) 
links = getLinks("/wiki/Kevin_Bacon")
print(links)

代码运行后报错如下，请问这是为什么呢？感谢指点！

Traceback (most recent call last):
  File "c:\Users\A\AppData\Roaming\Code\User\test\2.py", line 11, in <module>
    links = getLinks("/wiki/Kevin_Bacon")
  File "c:\Users\A\AppData\Roaming\Code\User\test\2.py", line 8, in getLinks
    html = urlopen(" https://en.wikipedia.org "+articleUrl)
  File "D:\Python\Python3\lib\urllib\request.py", line 223, in urlopen
    return opener.open(url, data, timeout)
  File "D:\Python\Python3\lib\urllib\request.py", line 526, in open
    response = self._open(req, data)
  File "D:\Python\Python3\lib\urllib\request.py", line 544, in _open
    '_open', req)
  File "D:\Python\Python3\lib\urllib\request.py", line 504, in _call_chain
    result = func(*args)
  File "D:\Python\Python3\lib\urllib\request.py", line 1361, in https_open
    context=self._context, check_hostname=self._check_hostname)
  File "D:\Python\Python3\lib\urllib\request.py", line 1320, in do_open
    raise URLError(err)
urllib.error.URLError: <urlopen error [Errno 11004] getaddrinfo failed>