title: Saving XlsxWriter file into IBM Cloud Object Storage with Python
body: <p>I want to save XlsxWriter file using project-lib for Python in IBM Watson Studio.</p>
  <p>The tutorial shows example for csv file, which works. But when I try to do the same for XlsxWriter it needs to do more actions which I couldn't know.</p>
  <pre><code>writer = pd.ExcelWriter('archivo.xlsx')
  archivo = pd.ExcelWriter(&quot;archivo.xlsx&quot;)
  df1.to_excel(writer, sheet_name=&quot;df_1&quot;, index=False)
  df2.to_excel(writer, sheet_name=&quot;df_2&quot;, index=False) 
  df3.to_excel(writer, sheet_name=&quot;df_3&quot;, index=False)
  project.save_data(data=writer,file_name=archivo,overwrite=True)
  </code></pre>
  <p>The error: <code>TypeError: expected string or bytes-like object</code></p>