Convert string column to integer
<p>I have a dataframe like below</p>

<pre><code>    a   b
0   1   26190
1   5   python
2   5   580
</code></pre>

<p>I want to make column <code>b</code> to host only integers, but as you can see <code>python</code> is not int convertible, so I want to delete the row at index <code>1</code>. My expected out put has to be like</p>

<pre><code>    a   b
0   1   26190
1   5   580
</code></pre>

<p>How to filter and remove using pandas in python?</p>