<p>我有两张单子:</p>
<pre><code>l1=['TUDCAPL.CLM_NUM_CD',
'TUDCAPL.CRT_TS',
'TUDCAPL.CLM_NUM_CD',
'TUDCAPL.CRT_TS',
'TUDCAPJ.CLM_NUM_CD',
'TUDCAPJ.CRT_TS']
l2 = ['TUDCAPL.CLM_NUM_CD',
'TUDCAPL.CRT_TS']
</code></pre>
<p>我希望我的结果是</p>
<pre><code>l3 = ['TUDCAPL.CLM_NUM_CD',
'TUDCAPL.CRT_TS',
'TUDCAPJ.CLM_NUM_CD',
'TUDCAPJ.CRT_TS']
</code></pre>
<p>我用了<code>l3 = [x for x in l1 if x not in l2]</code>
但是结果是<code>['TUDCAPJ.CLM_NUM_CD','TUDCAPJ.CRT_TS']</code><em>忽略了重复项</em>。我怎样才能获得与其他唯一值一起的副本?你知道吗</p>