title: python string substitution in sqlite query
body: <p>i'm trying to use an IN statement to return results which match one of a list of strings</p>
  
  <p>for example </p>
  
  <p><code>strings = ['string1', 'string2', 'string3']</code>
  <code>c.execute('select count(*) from table where foo in ?', strings)</code></p>
  
  <p>i know this is incorrect and doesnt work but i hope that it highlights what im trying to do...</p>