擅长:python、mysql、java
<pre><code>>>> l1 = ["f1", "f2", "f3", "f4", "f5"]
>>> [[a for a in l1 if a != leave_out] for leave_out in l1]
[['f2', 'f3', 'f4', 'f5'], ['f1', 'f3', 'f4', 'f5'], ['f1', 'f2', 'f4', 'f5'], ['f1', 'f2', 'f3', 'f5'], ['f1', 'f2', 'f3', 'f4']]
</code></pre>