擅长:python、mysql、java
<p>短</p>
<pre><code>first_List = ['a', 'b', 'c', 'a', 'd', 'c']
d = {i:'' for i in first_List if first_List.count(i) > 1}
second_List = ['unique' if i not in d.keys() else f'dup{list(d.keys()).index(i)+1}' for i in first_List]
</code></pre>
<p>它很好用</p>
<p>这和</p>
<pre><code>d = {i:'' for i in first_List if first_List.count(i) > 1}
second_List = list()
for i in first_List:
text = 'unique' if i not in d.keys() else f'dup{list(d.keys()).index(i)+1}'
second_List.append(text)
</code></pre>