擅长:python、mysql、java
<p>它是一个<a href="https://docs.python.org/3/tutorial/datastructures.html#list-comprehensions" rel="nofollow noreferrer">list comprehension</a></p>
<pre><code>res = [p/o for o in f if not o.startswith('.')
and (extensions is None or f'.{o.split(".")[-1].lower()}' in extensions)]
</code></pre>
<p>是</p>
<pre><code>res = []
for o in f:
if not o.startswith('.') and (extensions is None or f'.{o.split(".")[-1].lower()}' in extensions):
res.append(p/o)
</code></pre>