old_contents: import os
  from aiotg import Bot, Chat
  
  bot = Bot(os.environ["API_TOKEN"])
  
  
  @bot.command(r"/echo (.+)")
  def echo(chat: Chat, match):
      return chat.reply(match.group(1))
  
  
  if __name__ == "__main__":
      bot.run(debug=True)
  
new_contents: import os
  from aiotg import Bot, Chat
  
  bot = Bot(api_token="API_TOKEN")
  
  
  @bot.command(r"/echo (.+)")
  def echo(chat: Chat, match):
      return chat.reply(match.group(1))
  
  
  if __name__ == "__main__":
      bot.run(debug=True)
  
subject: Update echo.py