擅长:python、mysql、java
<p>这应该是你想要的:</p>
<pre><code>groupA=['Russia', 'Egypt', 'Saudi Arabia', 'Uruguay']
for i in range(len(groupA)):
for j in range(i+1, len(groupA)):
print("{} Vs. {}".format(groupA[i], groupA[j]))
</code></pre>
<p>如果您喜欢使用itertools:</p>
<pre><code>from itertools import combinations
groupA=['Russia', 'Egypt', 'Saudi Arabia', 'Uruguay']
for combo in combinations(groupA, 2):
print("{} Vs. {}".format(combo[0], combo[1]))
</code></pre>