Pandas: Get next value in column after string match
<p>How does one get the <em>next value</em> in a column, <em>after</em> a string match?</p>

<pre><code>regex = 'ABC'
row_match = df["column1"].str.match(regex, case=False)
</code></pre>

<p>I.e. how to get the value in the next row in the same column, following the one where the string <code>ABC</code> can be found?</p>

<p>I tried iterating over one row with <code>iterrows</code>, but I wasn't able to get it to work.</p>