code: def find_model(model_name, apps=settings.INSTALLED_APPS, fuzziness=0):
      
      # if it looks like a file system path rather than django project.app.model path the return it as a string
      if '/' in model_name:
          return model_name
      if not apps and isinstance(model_name, basestring) and '.' in model_name:
          apps = [model_name.split('.')[0]]
      apps = util.listify(apps or settings.INSTALLED_APPS)
      for app in apps:
          # print 'getting %r, from app %r' % (model_name, app)
          model = get_model(model=model_name, app=app, fuzziness=fuzziness)
          if model:
              return model
      return None
docs: Find model_name among indicated Django apps and return Model class
  
      Examples:
          To find models in an app called "miner":
  
          >>> find_model('WikiItem', 'miner')
          >>> find_model('Connection', 'miner')
          >>> find_model('InvalidModelName')