Pandas data-frame creation as permutations of 2 series?
<p>I have data set with two columns </p>

<pre><code>ColA ColB
1    1 
2    2
3    3
</code></pre>

<p>I want to create resultant frame of </p>

<pre><code>ColA ColB
1    1
1    2
1    3
2    1
2    2
2    3
3    1
3    2
3    3
</code></pre>