Splitting multiple columns into rows in pandas dataframe
<p>I have a pandas dataframe as follows:</p>

<pre><code>ticker    account      value         date
aa       assets       100,200       20121231, 20131231
bb       liabilities  50, 150       20141231, 20131231
</code></pre>

<p>I would like to split <code>df['value']</code> and <code>df['date']</code> so that the dataframe looks like this:</p>

<pre><code>ticker    account      value         date
aa       assets       100           20121231
aa       assets       200           20131231 
bb       liabilities  50            20141231
bb       liabilities  150           20131231
</code></pre>

<p>Would greatly appreciate any help. </p>