Accessing every 1st element of Pandas DataFrame column containing lists
<p>I have a Pandas DataFrame with a column containing lists objects</p>

<pre><code>      A
0   [1,2]
1   [3,4]
2   [8,9] 
3   [2,6]
</code></pre>

<p>How can I access the first element of each list and save it into a new column of the DataFrame? To get a result like this:</p>

<pre><code>      A     new_col
0   [1,2]      1
1   [3,4]      3
2   [8,9]      8
3   [2,6]      2
</code></pre>

<p>I know this could be done via iterating over each row, but is there any "pythonic" way? </p>