擅长:python、mysql、java
<p>您可以使用<code>defaultdict</code></p>
<pre><code>from collections import defaultdict
L = [['Patriots', 'Giants', '3', '1'], ['Steelers', 'Patriots', '1', '2'], ['Giants', 'Steelers', '3', '5']]
D = defaultdict(int)
for match in L:
team1, team2, score1, score2 = match
D[team1] # make sure the team exist in the dict even if it never wins a match
D[team2] # make sure the team exist in the dict even if it never wins a match
if int(score1) > int(score2):
D[team1] += 1
if int(score2) > int(score1):
D[team2] += 1
</code></pre>
<p>如果您确实需要,那么您可以轻松地将<code>D</code>转换为列表。。。你知道吗</p>