title: Python Tornado Web - AttributeError: 'Connection' object has no attribute '_execute'
body: <p>I'm experiencing a strange behaviour working with the latest branch of tornadoweb when I deploy my app on my production server.</p>
  
  <p>I tested several times the code and it is fully working when I test it on my laptop (Archlinux) with python 2.6.3 and MySQLdb 1.2.3b2.</p>
  
  <p>As soon as I deploy on my production server (Ubuntu x64) with python 2.6.2, MySQLdb 1.2.3.c1 ('ve tested also with 1.2.1 version) and call for that page it raises this error:</p>
  
  <pre><code>Traceback (most recent call last):  
    File "/usr/local/lib/python2.6/dist-packages/tornado/web.py", line
  688, in _execute  
      getattr(self, self.request.method.lower())(*args, **kwargs)  
    File "/var/www/app.py", line 122, in get  
      self.store_db('cc',test)  
    File "/var/www/app.py", line 82, in store_db  
      self.db.execute(query)  
    File "/usr/local/lib/python2.6/dist-packages/tornado/database.py",
  line 132, in execute  
      self._execute(cursor, query, parameters)  
  AttributeError: 'Connection' object has no attribute '_execute' 
  </code></pre>
  
  <p>The strange behaviour is also that testing the native demo (called blog) on my laptop it works fine, but as soon as I deploy it in production it stop working with the save trouble listed above.</p>
  
  <p>I have to add that <code>db.get</code> / <code>db.query</code> functions works fine.</p>