擅长:python、mysql、java
<p>使用检查标志</p>
<p><strong>Ex:</strong></p>
<pre><code>test = [('ent1', 24), ('ent2',12), ('ent3',4.5), ('ent1', 4), ('ent2', 3.5)]
check_val = set() #Check Flag
res = []
for i in test:
if i[0] not in check_val:
res.append(i)
check_val.add(i[0])
print(res)
</code></pre>
<p><strong>输出:</strong></p>
<pre><code>[('ent1', 24), ('ent2', 12), ('ent3', 4.5)]
</code></pre>