title: Maximum number of fields for Python .format
body: <p>I'm constructing a pretty long mysql query using the Python string.format() method.  However, when I try to use more than 10 fields ({0} to {10}) I get a tuple out of range error.  When I only use 10 fields ({0} to {9}), there's no problem.  </p>
  
  <p>I really just need to know how many fields .format() can handle and how to address a field over #9 if it's possible.  Thank you!</p>