title: Python convert (read & save) excel xlsx to xls
body: <p>How can I convert an existing <code>xlsx</code> Excel file into <code>xls</code> while retaining my Excel file formatting? I use Anaconda Python 3, so I'm not sure I can use <code>xlutils</code>... I was not able to install it via <code>conda install xlutils</code> because of lots of incompatibilities. So now I use this code without the <code>xlutils.copy()</code>:</p>
  
  <pre><code>import xlrd, xlwt
  
  wb = xlrd.open_workbook(my_xlsx_excel_file)
  # wb = xlutils.copy(wb)
  wb.save(my_xlsx_excel_file[:-1])
  </code></pre>
  
  <p>And I get this error:</p>
  
  <pre><code>AttributeError: 'Book' object has no attribute 'save'
  </code></pre>
  
  <p>Thank you!</p>