擅长:python、mysql、java
<p>^{cd1>}接受任意数量的集作为参数:</p>
<pre><code>In [28]: x.union(set([1,2]),set([2,3]),set([3,4]))
Out[28]: set([1, 2, 3, 4])
</code></pre>
<p>因此,可以将集合列表与</p>
^{pr2}$
<p><a href="http://www.saltycrane.com/blog/2008/01/how-to-use-args-and-kwargs-in-python/" rel="noreferrer">Note the asterisk</a>。</p>