title: Pandas Copy columns from one data frame to another with different name
body: <p>I have to copy columns from one DataFrame <code>A</code> to another DataFrame <code>B</code>.   The column names in <code>A</code> and <code>B</code> do not match. </p>
  
  <p>What is the best way to do it? There are several columns like this. Do I need to write for each column like <code>B["SO"] = A["Sales Order"]</code> etc.</p>