In [1]: from bs4 import BeautifulSoup as bsoup

In [2]: import requests as rq

In [3]: url = "http://www.livescore.com/soccer/champions-league/"

In [4]: r = rq.get(url)

In [5]: bs = bsoup(r.text)

In [6]: links = bs.find_all("a", class_="scorelink")

In [7]: links
Out[7]:
[<a class="scorelink" href="/soccer/champions-league/group-a/atletico-madrid-vs-malmo-ff/1-1821150/" onclick="return false;">? - ?</a>,
 <a class="scorelink" href="/soccer/champions-league/group-a/olympiakos-vs-juventus/1-1821151/" onclick="return false;">? - ?</a>,
...

In [8]: links_clean = [link for link in links if link.get_text() != "? - ?"]

In [9]: links_clean
Out[9]:
[<a class="scorelink" href="/soccer/champions-league/group-e/cska-moscow-vs-manchester-city/1-1821202/" onclick="return false;">0 - 1</a>,
 <a class="scorelink" href="/soccer/champions-league/qualifying-round/zenit-st-petersburg-vs-standard-liege/1-1801440/" onclick="return false;">3 - 0</a>,
...

In [10]: links_final = [link["href"] for link in links_clean]

In [11]: links_final
Out[11]:
['/soccer/champions-league/group-e/cska-moscow-vs-manchester-city/1-1821202/',
 '/soccer/champions-league/qualifying-round/zenit-st-petersburg-vs-standard-liege/1-1801440/',
...