old_contents: import falcon
  import json
  
  class SubscribesController(object):
      def on_get(self, req, resp):
          resp.status = falcon.HTTP_200
          subs = [{'name': 'programming'}, {'name': 'soccer'}, {'name': 'csharp'}]
          jsn = json.dumps(subs)
          resp.body = json.dumps(subs)
  
new_contents: import falcon
  import json
  
  class SubscribesController(object):
      def on_get(self, req, resp):
          resp.status = falcon.HTTP_200
          subs = [{'name': 'programming'}, {'name': 'soccer'}, {'name': 'csharp'}]
          resp.body = json.dumps(subs)
  
subject: remove redundant code