title: PEP8 guidance for column names in pandas dataframe?
body: <p>Is there a standard naming convention that is suggestible for columns in Pandas Dataframes ?</p>
  <p>As I looked around, this seems to be the most relevant question or answer on this topic: <a href="https://stackoverflow.com/questions/47964380/pandas-dataframe-column-naming-conventions">Pandas DataFrame column naming conventions</a>. I couldn't find anything on PEP8 from quick glances. The solution provided here offers some general advice but no standard leaving it to the developer's prerogative.</p>
  <pre class="lang-py prettyprint-override"><code>import pandas as pd
  
  col_names =  ['MyColumn1', 'Mycolumn2']
  my_df  = pd.DataFrame(columns = col_names)
  </code></pre>
  <p>It looks like snake case looks appropriate from my personal perspective, but I want to know what is the standard and if PEP8 has any guidance.</p>