title: What are all Python Pandas .agg functions?
body: <p>I am talking about Python Pandas <code>.agg()</code> function, this one:</p>
  <pre><code>meanData = all_data.groupby(['Id'])[features].agg('mean')
  </code></pre>
  <p>So, it can do things like:</p>
  <ul>
  <li>Mean</li>
  <li>Median</li>
  <li>Sum</li>
  <li>Max</li>
  <li>Min</li>
  <li>Std</li>
  </ul>
  <p>What else can it do? I found nothing on the official documentation page:
  <a href="https://pandas.pydata.org/pandas-docs/stable/generated/pandas.core.groupby.DataFrameGroupBy.agg.html" rel="nofollow noreferrer">https://pandas.pydata.org/pandas-docs/stable/generated/pandas.core.groupby.DataFrameGroupBy.agg.html</a></p>