new_contents: from slackclient import SlackClient
  import os
  import sys
  
  def send(message):
      sc = SlackClient(os.environ['SLACK_KEY'])
      sc.api_call('chat.postMessage', channel='#aoeu', text=message, as_user=True)
  
  if __name__ == '__main__':
      send(sys.argv[1])
  
subject: Add manual sender