old_contents: import re
  from redis import Redis
  import json
  from datetime import datetime
  
  def is_valid_chatroom(chatroom):
      return re.match('[A-Za-z_\\d]+$', chatroom) is not None
  
  def get_redis():
      return Redis()
  
  def get_conversation(chatroom):
      if chatroom is None or len(chatroom) == 0:
          return None
      # if chatroom doesn't exist create it!
      storage = get_redis()
      return [
          json.loads(m)
          for m in storage.lrange('notifexample:' + chatroom, 0, -1)
      ]
  
  def send_message(chatroom, user_id, name, message):
      if '<script>' in message:
          message += '-- Not this time DefConFags'
      storage = get_redis()
      now = datetime.now()
      created_on = now.strftime('%Y-%m-%d %H:%M:%S')
      storage.rpush(
          'notifexample:' + chatroom,
          json.dumps({
              'author': name,
              'userID': user_id,
              'message': message,
              'createdOn': created_on
          })
      )
  
  
new_contents: import re
  from redis import Redis
  import json
  from datetime import datetime
  
  def is_valid_chatroom(chatroom):
      return re.match('[A-Za-z_\\d]+$', chatroom) is not None
  
  def get_redis():
      return Redis()
  
  def get_conversation(chatroom):
      if chatroom is None or len(chatroom) == 0:
          return None
      storage = get_redis()
      return [
          json.loads(m)
          for m in storage.lrange('notifexample:' + chatroom, 0, -1)
      ]
  
  def send_message(chatroom, user_id, name, message):
      if '<script>' in message:
          message += '-- Not this time DefConFags'
      storage = get_redis()
      now = datetime.now()
      created_on = now.strftime('%Y-%m-%d %H:%M:%S')
      # if chatroom doesn't exist create it!
      storage.rpush(
          'notifexample:' + chatroom,
          json.dumps({
              'author': name,
              'userID': user_id,
              'message': message,
              'createdOn': created_on
          })
      )
  
  
subject: Correct position of comment :)