title: how to set 2 rows to become header in a dataframe with originally has a header?
body: <p>I am facing problem on how to set another 2 rows be my header.</p>
  
  <p>In a dataframe I have one header, and now I want take my first row and second row become header. Below is my dataframe code:</p>
  
  <pre><code>pvm=pd.DataFrame(pvm)
  </code></pre>
  
  <p>How can I add <code>header=[0,1]</code> into above code?<br>
  Or need start from the table style? </p>
  
  <pre><code>tableyy = final.style.set_table_attributes('border="" clas= "dataframe table table-hover table-bordered"').set_precision(10).render()
  </code></pre>