code: def get_default_connection_details():
      
  
      return {
          'host': os.environ.get('MYSQL_HOST', '127.0.0.1'),
          'user': os.environ.get('MYSQL_USER', 'vagrant'),
          'password': os.environ.get('MYSQL_PASSWORD', 'vagrant'),
          'database': os.environ.get('MYSQL_DB', 'thanatos'),
      }
docs: Gets the connection details based on environment vars or Thanatos default settings.
  
      :return: Returns a dictionary of connection details.
      :rtype: dict