Pandas: Refer to column name, case insensitive
<p>Using <code>Pandas DataFrame</code>, let's say I have a bunch of columns in a <em>csv</em> file, and I want to be able to access any one of them via case insensitive name.</p>

<pre><code>import pandas as pd

df = pd.read_csv(path_to_csv, delimiter=",")

df2 = df["Size"]
</code></pre>

<p>The actual column name is <code>"Size"</code>. What can I do so that <code>df2 = df["sIZE"]</code> can also be accepted?</p>