title: Create Excel XML files from Python
body: <p>I need to create Excel XML files from Python.</p>
  
  <p>The Excel XML format is fairly simple.  I looked at a a sample xml file saved from Excel 2003 and it is fairly simple.</p>
  
  <p>I'm looking for a a Pythonic, ready made library to create such xml files instead of reinventing one.  </p>
  
  <p>Something that I can use as below:</p>
  
  <pre><code>book = Expy.Workbook()
  s1 = book.add_sheet()
  s1[0, 2] = "A3"
  s1[0, 0] = 12
  s1[0, 9] = Expy.Formula("=Sum(A1:A3)")
  
  book.write("excelfile.xml")
  </code></pre>
  
  <p>Anybody know of something like that?</p>
  
  <p>xlwt seems outdated, supporting python 2.x only, and seems to write xls files, not xml.</p>