Python - How to remove/unimport libs was imported before
<p>As we know that, in python 2.x, <strong>integer</strong> would be got if we divide two <strong>integer</strong> values. However, if using the <strong><em>furture</em></strong> (it's might be a lib or something like that), just like <strong>from __<em>future</em>__ import division</strong>, we can get float value. E.g.:</p>

<pre><code>&gt;&gt;&gt; 3/2
1
&gt;&gt;&gt; from __future__ import division
&gt;&gt;&gt; 3/2
1.5
&gt;&gt;&gt; 
&gt;&gt;&gt; 
&gt;&gt;&gt; 3//2
1
&gt;&gt;&gt; 4/3
1.3333333333333333
&gt;&gt;&gt; 
</code></pre>

<p>So, <strong>'//'</strong> instead of <strong>'/'</strong> should be used if getting integer after imported division, but I want to know how to using <strong>'/' to get integer again</strong>. That is mean, whether there is some way to un-import or remove the libs which was imported before.</p>
