old_contents: from pulldb.base import BaseHandler
  
  class MainPage(BaseHandler):
    def get(self):
      template_values = self.base_template_values()
      template = self.templates.get_template('index.html')
      self.response.write(template.render(template_values))
  
  app = webapp2.WSGIApplication([
      ('/', MainPage),
  ], debug=True)
  
new_contents: import webapp2
  
  from pulldb.base import BaseHandler
  
  class MainPage(BaseHandler):
    def get(self):
      template_values = self.base_template_values()
      template = self.templates.get_template('index.html')
      self.response.write(template.render(template_values))
  
  app = webapp2.WSGIApplication([
      ('/', MainPage),
  ], debug=True)
  
subject: Fix missing import